TY  - BOOK
AU  - Guttentag Marcia
AU  -  Secord Paul F
TI  - Too many women?:  The sex ratio question   
SN  - 0803919182
U1  - Y:3(S5), M3 
PY  - 1983///
CY  - Beverly
PB  - Hills Sage Publications        
ER  -