TY  - GEN
AU  - Cunningham , Gary F.
AU  - Leveno , Kenneth J.
AU  - Bloom , Steven L.
AU  - Spong , Catherine Y.
AU  -  Dashe , Jodi S.
TI  - Williams obstetrics 
SN  - 9780071798938
U1  - 618.2 
PY  - 2014///
CY  - New York
PB  - McGraw Hill Education
KW  - Obstetrics
UR  - www.mcgrawhillmedical.com
ER  -