TY  - BOOK
AU  - Hafez,E.S.E.
AU  - Van Os W.A.A.,ed
TI  - Biodegradables and delivery systems for Contraception
SN  - 0816122156
U1  - 613.94 
PY  - 1980///
CY  - 
PB  - G. K. Hall Medical.
KW  - CONTRACEPCION
ER  -