TY  - BOOK
AU  - Maisel Richard
AU  -  Persell Caroline Hodges
TI  - How sampling works
T2  - The pine forge press series in research methods and statistics
U1  - (:f), N6(2D) 
PY  - 1996///
CY  - Thousand
PB  - Oaks Pine Forge press    
KW  - RESEARCH METHODS
ER  -