000 00300nam a2200133 4500
020 _a
_c279.0
082 _a001.42 TRO/R
100 _aTrochim,William M K
245 _aResearch methods
250 _a2 Edition
260 _bBiztantra,New Delhi
_c2009
590 _aModern Books
_b
_d
942 _cBK
999 _c450771
_d450771