TY  - BOOK
AU  - Ott,William J.
TI  - Clinical obstetrical ultrasound
SN  - 9780471329275
U1  - 618.207543 
PY  - 1999///
CY  - New York
PB  - Wiley
KW  - Obstetrics
KW  - Ultrasound
N1  - Includes CD-ROM; Mean gestational age formulae
ER  -