TY  - BOOK
AU  - Winstein,Merryl
TI  - Your fertility signals: using them to achieve or avoid pregnancy naturally 
SN  - 0961940107
AV  - RG136.5 .W56 1989
U1  -   
PY  - 1989///
CY  - St. Louis, Mo., U.S.A.
PB  - Smooth Stone Press
KW  - Natural family planning
N1  - Includes index
ER  -