TY  - BOOK
AU  - Pollard A H, and others
TI  - Demographic techniques
SN  - 0080400655
U1  - Y:5:(B), N0 
PY  - 1990///
CY  - Sydney
PB  - Pergamon Press         
KW  - Family Planning
N1  - Appendix: p 173-177
ER  -