TY  - BOOK
AU  - Johnson,William Bert,comp
TI  - Information, education and communication for population and family planning
U1  - 301.321/J63in 
PY  - 1973///
CY  - Chicago, Estados Unidos 
PB  - University of Chicago.
KW  - CONTROL DE LA NATALIDAD
N1  - Incluye bibliografía
ER  -