TY  - GEN
AU  - Balaskas, Arthur
AU  - Balaskas, Janet
TI  - Active Birth
SN  - 0070035458
U1  - 618.4 
PY  - 1983///
CY  - New York
PB  - McGraw-Hill
KW  - Child birth
KW  - Exercise for women
KW  - Medicine
KW  - Pregnancy
ER  -