Subject
Animal Science and Zoology,Food Animals
Reference28 articles.
1. Drägtighetsperiodens längd hos nötkreaturen inom Malmöhus Län;Axelsson;Referat. Clausen. Züchtungskunde
2. Length of gestations in Jersey cows;Copeland;Referat. Stegen. Züchtungskunde
3. Influence of the male in the production of human twins;Davenport;American Naturalist,1920