TY  - BOOK
AU  - Hatcher,Robert A.
TI  - The essentials of contraceptive technology / 
PY  - 1997///
CY  - Baltimore : 
PB  - The Johns Hopkins School of Public Health, 
KW  - Contraceptives, Vaginal
KW  - Contraceptives, postcoital
KW  - Contraceptive drugs, injectable
KW  - Oral contraceptives
KW  - Contraceptive drugs, implantable
N1  -  Includes bibiographical references and index
ER  -