The "Safe Periode" as a birth control measure
A study and evaluaton of available data
Authors
Robert L. Dickinson
Pages
13
The science of a new life
Authors
John Cowan
Pages
405
The Shadow of the Storck
A text book of Birth Control Methods..
The Shadow of the Storck
A text book of Birth Control Methods.
The Simon population trust
A brief history
Authors
Penny Kane
Pages
12
The spermicidal potency of Coca-Cola and Pepsi-Cola
Authors
C. Y. Hong, C. C. Shieh, P. Wu
Pages
2