共 10 条
[1]
ALMQUIST J. O., 1956, Plenary Pap. 3rd int. Congr. Anim. Reprod., P50
[3]
GREEN WW, 1947, AM J VET RES, V8, P299
[4]
HOVERSLAND AS, 1956, P WEST SEC AM SOC AN, V7, pR53
[6]
INKSTER I. J., 1957, Sheepfarming Annual, P163
[7]
LAMBOURNE L. J., 1956, Proceedings of the Ruakura Farmers' Conference Week Hamilton, New Zealand, 1956., P16
[8]
MCKENZIE FF, 1930, P AM SOC ANIM PROD, V32, P138
[9]
MCKENZIE FF, 1937, 264 MO AGR EXP STA R
[10]
TERRILL CE, 1939, P AM SOC ANIM PROD, V32, P369