共 4 条
- [1] FRENKEL JK, 1953, LTH RIASS COMM C INT, V2, P556
- [2] FRENKEL JK, 1955, LTH RIASS COMM C INT, V5, P426
- [3] POLS J. W., 1954, Journal of the South African Veterinary Medical Association, V25, P37
- [4] POLS J. W., 1954, Journal of the South African Veterinary Medical Association, V25, P45