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| ©Ewing Galloway | |
| PLOWING AN ALFALFA FIELD BY TRACTOR |
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| ©Keystone View Company | |
| PRIMITIVE AGRICULTURE ON THE NILE |
Page:Collier's New Encyclopedia v. 01.djvu/95
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_CNE-v1-p58-I.jpg)
| |
| ©Ewing Galloway | |
| PLOWING AN ALFALFA FIELD BY TRACTOR |
| |
| ©Keystone View Company | |
| PRIMITIVE AGRICULTURE ON THE NILE |