@book{91772,
	author = {Thomas, Mary.},
	title = {Back crossing; the theory and practice of the backcross method in the breeding of some non-cereal crops.},
	publisher = {Commnwealth Bureau of Plant Breeding and Genetics},
	year = {1952},
	series = {Commnwealth Bureau of Plant Breeding and Genetics, Technical Communication 16},
	address = {Cambridge}
}