TY  - BOOK
AU  - Hammond, Michael
TI  - Research mathods: the key concepts
SN  - 9784155998332
U1  - 001.42 Q32 
PY  - 2015///
CY  - New York
PB  - Routledge Taylor & Francis
KW  - Social Science
KW  - Social Science.Research.Survey
KW  - Title
ER  -