共 6 条
[2]
BERNARD A, 1953, P K NED AKAD WET A, V56, P358
[4]
Penny R. H. C., 1963, Veterinary Record, V75, P1225
[5]
PENNY RHC, 1968, THESIS RCVS LONDON
[6]
SCOTT ML, 1969, NUTRITION CHICKEN