00311cam a2200121Ma 4500020001500000020001800015040000800033082002600041245006600067300001500133650002000148700002100168  a0813822807  a9780813822808  cAU@  a631 FRE 1966 A053 Or.10aPlant breeding :ba symposium held at Iowa State University /  a430 pages. 0aPlant breeding.1 aFrey, Kenneth J.