TY  - BOOK
AU  - Marshall, John.
TI  - The Infertile Period: Principles and Practice 
U1  - 241.66 
PY  - 1963///
CY  - London :, Baltimore
PB  - Darton, Longman and Todd, Helicon Press
KW  - Contraception
N1  - Bibliography: p. 107-108
ER  -