1. Estudio teratológico de un caso de exencefalia Author(s): Torralbas, José I., author Publication: Carácas : Imprenta de "La opinion nacional" por Fausto Teodoro de Aldrey, 1876 Subject(s): Neural Tube DefectsAbnormalities, Severe Teratoid
2. Iniencephalus Author(s): Lewis, Henry Foster, 1864- author Publication: New York : William Wood & Company, 1897 Subject(s): Neural Tube Defects
3. Memorandum from C. Everett Koop to the Office of the Secretary of Health Publication: Produced: 9 July 1981 Subject(s): alpha-FetoproteinsPrenatal CareNeural Tube Defects Archival Collection: The C. Everett Koop Papers (Profiles in Science)
