000 00271nam a2200109Ia 4500
008 220321s9999 xx 000 0 und d
100 _aSuresh Chandra Pachauri
245 0 _aEducational Technology
260 _aDelhi, Publication A.P.H
_c2012
300 _a258
942 _cRF
999 _c9216
_d9216