1. Anestrus: The Practitioner's Dilemma;Zemjanis;Vet Scope,1969
2. Diagnostic and Therapeutic Techniques in Animal Reproduction;Zemjanis,1970
3. Determination of Progesterone in Milk Applied for Pregnancy Diagnosis in the Cow;Hoffmann;Theriogenology,1974
4. A Hazard of Pregnancy Diagnosis in Cattle: Early Foetal Size;Rowson;Vet. Rec.,1963
5. Rupture of the Amnionic Vesicle;Ball,1968