TY  - BOOK
AU  - McCarthy,John J.
AU  - Martin,Mary C.,jtauthor
TI  - Fertility awareness: an instructional program with charts and text 
PY  - 1982///
CY  - Washington, DC
PB  - The Human life and Natural family planning foundation
KW  - Fertility, Human
KW  - Study and teaching
N1  - Open access
ER  -