McMullen, Neil.
Seeds and world agricultural progress / - Washington, D.C. : National Planning Association, c1987. - viii, 263 p. : ill., map ; 22 cm.
0890680884
Seed industry and trade.
Seed technology.
338 NAT 1987
Seeds and world agricultural progress / - Washington, D.C. : National Planning Association, c1987. - viii, 263 p. : ill., map ; 22 cm.
0890680884
Seed industry and trade.
Seed technology.
338 NAT 1987