TY  - BOOK
AU  - Chang, Mark
TI  - Principles of scientific methods
SN  - 9781482238099
U1  - 001.42 CHA/P 
PY  - 2015///
CY  - Boca Raton
PB  - CRC Press
KW  - RESEARCH METHODOLOGY
KW  - SCIENTIIFIC METHODS
ER  -