共 11 条
- [1] [Anonymous], 1998, STANDARD METHODS EXA, V20
- [6] MOLITOR TW, 1997, P AD LEM C ST PAUL U, P279
- [7] Pirtle EC, 1996, J AM VET MED ASSOC, V208, P390
- [8] SNYDER ML, 1995, P 2 INT S PRRS, P15
- [9] SWENSON SL, 1994, J AM VET MED ASSOC, V204, P1943
- [10] Trincado C, 2003, AMERICAN ASSOCIATION OF SWINE VETERINARIANS, PROCEEDINGS, P503