1. Immunization of sheep, goats, cattle and pigs with Brucella suis strain 2;Xin,1980
2. Immunization of sheep, goats, cattle and pigs with Brucella suis strain 2;Xin,1980
3. Immunization of sheep, goats, cattle and pigs with Brucella suis strain 2;Xin,1981
4. Immunization of sheep, goats, cattle and pigs with Brucella suis strain 2;Xin,1980
5. Immunization of sheep, goats, cattle and pigs with Brucella suis strain 2;Hanjun,1980