author = { LEVINE, BARBARA },

title = { Nutrition Recommendations and Practices of Obstetrician‐Gynecologists before Conception and During Pregnancy A National Survey },

publisher = {Wiley},

isbn = {0077-8923},

isbn = {1749-6632},

keywords = { History and Philosophy of Science , General Biochemistry, Genetics and Molecular Biology , General Neuroscience },

year = {1993},

url = { http://slubdd.de/katalog?TN_libero_mab2 }