00945cam a2200277 4500 3099064 BD-DhUL 20150109175854.0 740206s1952 xx 000 0 eng d GB52-11761 (OCoLC)ocm00791718 (NNC)3099064 MIA BD-DhUL UKM ZCU BD-DhUL 631.523 18 631.52 THB Thomas, Mary. Back crossing : the theory and practice of the backcross method in the breeding of some non-cereal crops / by Mary Thomas. Cambridge : Commonwealth Bureau of Plant Breeding and Genetics, 1952. vi, 136 p. : 22 cm. RS 13.10 Commonwealth Bureau of Plant Breeding and Genetics, Cambridge, Eng. Technical communication 16 Includes bibliographical references and index. Plant breeding. AUTH ddc BK 29217 29217 0 0 ddc 0 631_523000000000000 0 NFIC 54728 DUSL DUSL GEN 1958-08-15 Purchased 631.523 A5002 2015-01-09 2015-01-09 BK