TY  - BOOK
AU  - Pollard, Alfred Hurlstone ,1916-
AU  - Yusuf, Farhat
TI  - Demographic techniques
SN  - 0080248179
AV  - HB881.P64 1981 
PB  - Pergamon Press
KW  - Demography -- Methodology
KW  - HB
N1  - Includes bibliographies and index
ER  -