TY  - BOOK
AU  - Gabbe, S.G.
AU  - Niebyl, J.R.
AU  - et al
TI  - Obstetrics: normal and problem pregnancies. 6th. ed
SN  - 9781437719352
PY  - 2012///
CY  - Philadelphia
PB  - Elsevier Saunders
KW  - Obstetrics, General Works
ER  -