TY  - BOOK
ED  - World Health Organisation (WHO)
TI  - Hormonal steroids in contraception: report of a WHO science group
T2  - World Health Organisation Technical Report Series; No.386
U1  - 610.621 
PY  - 1968///
CY  - Geneva
PB  - WHO
KW  - Steroid hormones
KW  - WHO
ER  -