Roberts, Stephen J. Veterinary obstetrics and general diseases (theriogenology) - 3 ed. - North Pomfret, Vermont : David and Charles, 1986 - 981 p. LCCN: 63061 Subjects--Topical Terms: Obstetricia veterinaria.Patología veterinaria.Reproducción animal. Dewey Class. No.: 636.0898 / R6 1986