Archive image from page 64 of Development and activities of roots. Development and activities of roots of crop plants; a study in crop ecology . developmentactiv00weav Year: 1922

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Photo credit: © Actep Burstov / Alamy / Afripics
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Keywords: 1920, 1922, archive, book, bookauthor, bookdecade, bookpublisher, booksubject, bookyear, crist_john_w_joint_author, crops_and_climate, drawing, historical, history, illustration, image, jean_frank_covert_1880_joint_author, page, picture, plant_ecology, print, reference, roots_botany_, vintage, washington_carnegie_institution_of_washington, weaver_john_e_john_ernest_1884_1966