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1293 visits
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1240 visits
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1176 visits
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1227 visits
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1604 visits
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1339 visits
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1279 visits
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1212 visits
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Scientific American 1877-12-08
1287 visits
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Scientific American 1877-12-15
1484 visits
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1876 visits
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Scientific American 1877-12-29
1483 visits
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Scientific American 1880-01-03
1313 visits
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Scientific American 1880-01-17
1223 visits
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1757 visits
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1213 visits
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Scientific American 1880-02-14
1255 visits
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Scientific American 1880-02-21
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1343 visits
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Scientific American 1880-03-06
1336 visits
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Scientific American 1880-03-13
1274 visits
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Scientific American 1880-03-20
1233 visits
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Scientific American 1880-03-27
1090 visits
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Scientific American 1880-04-03
1106 visits
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Scientific American 1880-04-10
1121 visits
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Scientific American 1880-04-17
1066 visits
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Scientific American 1880-04-24
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Scientific American 1880-05-01
1209 visits
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Scientific American 1880-05-08
1443 visits
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Scientific American 1880-05-15
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Scientific American 1880-05-22
1118 visits
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Scientific American 1880-05-29
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Scientific American 1880-06-05
1355 visits
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Scientific American 1880-06-12
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1053 visits
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Scientific American 1880-07-03
1084 visits
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Scientific American 1880-07-10
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Scientific American 1880-07-31
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Scientific American 1880-09-11
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Scientific American 1880-12-18
1196 visits
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Scientific American 1880-12-25
1179 visits
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Scientific American 1881-01-01
1278 visits
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Scientific American 1881-01-08
1215 visits
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Scientific American 1881-02-05
1086 visits
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Scientific American 1881-03-05
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Scientific American 1881-03-12
1059 visits
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Scientific American 1881-04-30
1530 visits
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Scientific American 1881-06-11
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Scientific American 1881-06-18
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Scientific American 1881-06-25
1333 visits
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Scientific American 1881-07-09
1127 visits
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Scientific American 1881-07-30
1194 visits
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Scientific American 1881-08-13
1127 visits
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Scientific American 1881-10-15
1453 visits
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Scientific American 1881-10-22
1311 visits