共 8 条
[3]
CRAFT WA, 1953, 916 USDA CIRC RES SW
[5]
ENFIELD FD, 1961, J ANIM SCI, V20, P631
[6]
ENGLAND DC, 1954, GROWTH, V18, P207
[7]
WARD HK, 1962, THESIS U MINNESOTA
[8]
1960, TECHNIQUES PROCEDURE, P56