共 8 条
[2]
GWIN J. M., 1951, AMER EGG AND POULTRY REV, V12, P40
[3]
GWIN JM, 1951, AMERICAN EGG POULTRY, V12, P14
[4]
GWIN JM, 1950, AMERICAN EGG POULTRY, V11, P8
[5]
KNAPP BG, 1959, POULTRY SCI, V38, P1219
[6]
MAY KN, 1959, POULTRY SCI, V38, P1225
[7]
PEARCE JESSE A., 1949, CANADIAN JOUR RES SECT F TECHNOL, V27, P253