TY - BOOK AU - Persaud, T.V. N. AU - Torchia , Mark G. TI - Before we are born essentials of embryology and birth defects SN - 9780443116971 AV - QM601 .P47 2025 PY - 2025/// CY - Philadephia PB - Elsevier KW - essentials embryology KW - Embryology KW - Birth defect N1 - includes index ER -