000
00284nam a22001217a 4500
003
AUM
020
_a
9788131530856
100
_a
Trochin, W. M.
245
_a
Research Methods the essentional knowledge base
260
_b
Cengage learning, india
_c
2016
300
_a
422
942
_2
ddc
_c
BK
999
_c
3103
_d
3103