ScientificAmerican1926-12.jpg Rider-Ericsson Hot Air Pumps -1900'sAThumbnailsWoman's World 1936-06Rider-Ericsson Hot Air Pumps -1900'sAThumbnailsWoman's World 1936-06Rider-Ericsson Hot Air Pumps -1900'sAThumbnailsWoman's World 1936-06Rider-Ericsson Hot Air Pumps -1900'sAThumbnailsWoman's World 1936-06
Recording results of scientific breeding. Modern farm management. Increased livestock quality, performance, yield.



Artist: Howard V. Brown

Source: Steve Kirch, collector, and creator of this website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner