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1436 visits
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1306 visits
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1366 visits
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1560 visits
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Scientific American 1877-12-22
1998 visits
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1581 visits
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1396 visits
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1304 visits
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1834 visits
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1287 visits
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1367 visits
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1336 visits
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1334 visits
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1424 visits
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1425 visits
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1363 visits
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1312 visits
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Scientific American 1880-03-27
1170 visits
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Scientific American 1880-04-03
1179 visits
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Scientific American 1880-04-10
1202 visits
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1142 visits
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Scientific American 1880-04-24
1190 visits
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Scientific American 1880-05-01
1301 visits
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Scientific American 1880-05-08
1524 visits
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Scientific American 1880-05-15
1176 visits
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Scientific American 1880-05-22
1210 visits
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Scientific American 1880-05-29
1646 visits
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Scientific American 1880-06-05
1436 visits
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Scientific American 1880-06-12
1664 visits
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Scientific American 1880-06-19
1177 visits
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Scientific American 1880-06-26
1135 visits
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Scientific American 1880-07-03
1156 visits
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Scientific American 1880-07-10
1249 visits
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Scientific American 1880-07-17
1321 visits
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Scientific American 1880-07-24
1194 visits
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Scientific American 1880-07-31
1283 visits
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Scientific American 1880-08-07
1237 visits
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Scientific American 1880-08-14
1236 visits
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Scientific American 1880-08-21
1176 visits
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Scientific American 1880-08-28
1321 visits
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Scientific American 1880-09-04
1272 visits
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Scientific American 1880-09-11
1159 visits
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Scientific American 1880-09-18
1514 visits
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Scientific American 1880-09-25
1217 visits
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Scientific American 1880-10-02
1466 visits
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Scientific American 1880-10-09
1372 visits
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Scientific American 1880-10-16
1229 visits
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Scientific American 1880-10-23
1218 visits
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Scientific American 1880-10-30
1449 visits
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Scientific American 1880-11-06
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Scientific American 1880-11-13
1504 visits
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Scientific American 1880-11-20
1821 visits
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Scientific American 1880-11-27
1292 visits
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Scientific American 1880-12-04
1628 visits
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Scientific American 1880-12-11
1807 visits
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Scientific American 1880-12-18
1284 visits
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Scientific American 1880-12-25
1255 visits
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Scientific American 1881-01-01
1401 visits
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Scientific American 1881-01-08
1335 visits
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Scientific American 1881-02-05
1209 visits
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Scientific American 1881-03-05
1472 visits
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Scientific American 1881-03-12
1173 visits
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Scientific American 1881-04-30
1623 visits
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Scientific American 1881-06-11
1408 visits
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Scientific American 1881-06-18
1536 visits
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Scientific American 1881-06-25
1447 visits
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Scientific American 1881-07-09
1275 visits
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Scientific American 1881-07-30
1289 visits
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Scientific American 1881-08-13
1242 visits
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Scientific American 1881-10-15
1568 visits
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Scientific American 1881-10-22
1387 visits
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Scientific American 1881-11-05
1179 visits
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Scientific American 1881-11-26
1368 visits
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Scientific American 1881-12-10
1161 visits
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Scientific American 1881-12-31
1276 visits
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Scientific American 1882-01-07
1209 visits
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Scientific American 1882-01-14
1243 visits
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Scientific American 1882-01-21
1399 visits
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Scientific American 1882-01-28
1525 visits
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Scientific American 1882-02-04
1188 visits