TY  - BOOK
ED  - World Health Organization.
TI  - Natural family planning: a guide to provision of services
SN  - 9241542411
AV  - RG136.5 .N38 1988
U1  - 613.9/4 20
PY  - 1988///
CY  - Geneva, Albany, NY
PB  - World Health Organization, WHO Publications Center USA [distributor]
KW  - Natural family planning
KW  - Birth control
N1  - Includes bibliographical references (p. 61-62)
ER  -