TY  - BOOK
AU  - Murphy, John Patric
AU  - Laux, John Donald
TI  - The rhythm way to family happiness: a lifetime referencefor the use of the rhythm method : a practical manual for applicaqtion of the medical fingers of Dr. K. Ogino and Dr. H. Knaus 
AV  - RG 136 M85
PY  - 1960///
CY  - New York
PB  - Hawthorn Books
KW  - Anticoncepción
ER  -