000 00293nam a2200121Ia 4500
008 190906s9999||||xx |||||||||||||| ||und||
020 _a9788131608678
100 _a Das Lal.D.K
245 0 _aPractice of Social Research
260 _aNew Delhi 
_bRawat
_c2017
300 _a376p.
942 _yBK
999 _c17042
_d17042