共 21 条
[11]
NEWLANDER JA, 1957, VERMONT AGR EXPT STA, V602
[13]
SHERWOOD DH, 1948, 427 OR AGR EXPT STA
[14]
STALLCUP OT, 1949, MISSOURI AGR EXPT ST, V523
[16]
THOMAS JK, UNPUBLISHED
[17]
THOMAS JW, 1957, J DAIRY SCI, V40, P626
[18]
WEBB RJ, 1957, J ANIM SCI, V16, P1057
[19]
WILSON C, 1953, SOUTH DAKOTA FARM HO, V5, P4
[20]
1957, USDAARS15 PROD RES R