Soy bean ; history, varieties & field studies
Piper, C.V.
Soy bean ; history, varieties & field studies - Washington U.S.D.A. Bureau of Plant Industry 1910 - 78p. - No.197 ;Bureau of Plant Indus .
Soy bean ; history, varieties & field studies - Washington U.S.D.A. Bureau of Plant Industry 1910 - 78p. - No.197 ;Bureau of Plant Indus .