Scientific American 1921-02-05 | <h5>magazineart.org: A visual encyclopedia of American magazine art 1870-1940</h5>

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Scientific American 1921-02-05

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Stripping sweet clover plants of their seed. Also, "The $5000 Einstein Prize essay".

Scientific American 1917-04-21

Scientific American 1928-07

Created on: Friday 21 November 2008
Posted on: Friday 21 November 2008
Tags: agriculture, factory farm, farm, mechanization
Albums: General Magazines / Science and Technology Magazines / Scientific American
Visits: 1387

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