Small seed improvement
Frier, G.M., Merick, L.S.
Small seed improvement - U.S.A. 1912 - 1-15 p. - Seed Purdue Agricultural Experimental Station. Circular No. 31 .
Small seed improvement - U.S.A. 1912 - 1-15 p. - Seed Purdue Agricultural Experimental Station. Circular No. 31 .