TY  - BOOK
AU  - Siegel,J.S& Swanson,D.A
TI  - Methods materials demography
SN  - 978-0-12-641955-9
AV  - S304.6me 
PY  - 2008///
CY  - Kigali
PB  - Emerald Group Publishing Limited
KW  - Book
ER  -