TY  - BOOK
AU  - Mann, G.E.
TI  - Poultry breeding: genetics and systems of breeding
U1  - 636.5082 21st ed.
PY  - 1955///
CY  - London
PB  - His Majestys Stationary Office
KW  - Poultry-Breeding
N1  - Index: pp 148-50
ER  -