共 20 条
- [11] NELSON JB, 1953, POULTRY SCI, V82, P43
- [12] NELSON JB, 1953, 25TH ANN C LAB WORK, P1
- [14] REED L. J., 1938, AMER JOUR HYG, V27, P493
- [15] RUBIN ALAN, 1954, AMER JOUR SYPHILIS GONORRHEA AND VENEREAL DIS, V38, P472
- [16] VANROEKEL H, 1952, AM J VET RES, V13, P252
- [19] YAMAMOTO R, 1956, AM J VET RES, V17, P538
- [20] 1956, GAINS CRD, V2774, P5