TY  - RPRT
TI  - A STUDY IN FERTILITY CONTROL.
AU  - B BERELSON
AU  - R FREEDMAN
PY  - 1964
DO  - 10.1038/scientificamerican0564-29
UR  - https://pubmed.ncbi.nlm.nih.gov/14154100/
ID  - 14154100
ER  -