TY  - GEN
AU  - Panneerselvam, R.
TI  - Research methodology
SN  - 9788120324527
U1  - 001.42 PAN  
PY  - 2012///
CY  - New Delhi : 
PB  - PHI Learning Private Limited, 
KW  - Data collection
KW  - Questionnaire design
KW  - Sampling methods
N1  - Include index
ER  -