共 10 条
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LOCKLEY R. M., 1954, Veterinary Record, V66, P434
[3]
Ministry of Agriculture and Fisheries Department of Agriculture for Scotland, 1955, 2 MIN AGR FISH DEP A
[4]
Ministry of Agriculture and Fisheries Department of Agriculture for Scotland, 1954, MYX
[5]
Muirhead Thomson R. C., 1954, COMMUNICATION
[7]
Ritchie J. N., 1954, Veterinary Record, V66, P796
[8]
Shanks P. L., 1955, VET J, V111, P25