TY  - BOOK
AU  - Berndtson,Bjorn
AU  - Bogue,Donald J.
TI  - Mass mailing manual for family planning: manual of procedures
U1  - 363.96/B457m 
PY  - 1972///
CY  - Chicago, Estados Unidos 
PB  - Community and Family Study Center, University of Chicago.
KW  - PLANIFICACION FAMILIAR
ER  -