TY  - BOOK
AU  - Borell, Ulf, ed.
AU  - Diczfalusy, Egon, ed.
TI  - Control of human fertility )
CY  - New York
KW  - Birth control - congresses
KW  - Contraception
KW  - Factor influencing fertilization and implantation
KW  - Fertility control
KW  - Fertility, human - congresses
ER  -