Cowie, Alfred T. Pregnancy diagnosis tests : a review / Alfred T. Cowie - Edinburgh : Commonwealth Bureau of Animal Breeding and Genetics , 1948. - 283 p. ; 22 cm. - Commonwealth Agricultural Bureaux. Joint publication ; no. 13. . Errata slip inserted Includes bibliographical references : p.181-279 Subjects--Topical Terms: Pregnancy --Signs and diagnosis------ Dewey Class. No.: 618.22 COW