000 00306nam a2200109 4500
082 _a301.160954 SAR
100 _aSarkar, Chanchal
245 _aChallenge and stagnation /
_cby Chanchal Sarkar
260 _aNew Delhi :
_c1969.
_bVikas Publishing House Private Limited,
650 _aEducation
942 _cBK
999 _c286877
_d286877