1. Pregnancy with anencephaly;Comerford;Lancet,1964
2. Prolonged gestation, acrania monstrosity and apparent placenta previa in one obstetrical case;Rea;JAMA,1898
3. Adrenal insufficiency in postmature Holstein calves;Holm;Am J Obstet Gynecol,1961
4. Adenophypophyseal aplasia, an inherited defect associated with abnormal gestation in Guernsey cattle;Kennedy;Cornell Vet,1957
5. Toxicosis of Veratrum californicum in ewes and its relationship to a congenital deformity in lambs;Binns;Ann N Y Acad Sci,1964