Proceedings : symposium on factors producing embryonic and fetal abnormalities, death, and abortion on swine helad at Chicago, Ill., October 2-3, 1967 sponsored by the National Academy of Sciences, United States Livestock Sanitary Association, Agricultural Research Service, U. S. Dept. of Agriculture.
Symposium on Factors Producing Embryonic and Fetal Abnormalities, Death, and Abortion in Swine (1967 : Chicago, Ill.) | Date: [1969]