TY  - BOOK
AU  - Gabbe,Steven G.
TI  - Obstetrics: normal and problem pregnancies 
SN  - 9780323321082 (hardcover)
PY  - 2017///
CY  - Philadelphia
PB  - elsevier
KW  - Pregnancy
KW  - Obstetrics
KW  - methods
KW  - Pregnancy Complications
N1  - Includes bibliographical references and index
ER  -