TY  - BOOK
TI  - Advantages in voluntary sterilization 
SN  - 9021902362
AV  - RG136 I8
PY  - 1974///
CY  - America 
PB  - American Elsevier Publishing Company 
N1  - Proceedings of the second international conference, Geneva Switzerland  February 25-March 1, 1973
ER  -