000 00371nam a2200145Ia 4500
003 PTTI
005 20251207204911.0
008 251207s9999 xx 000 0 und d
020 _c195
040 _aPTTI
245 0 _aEDUCATIONAL TECHNOLOGY
_cSURESH CH. PACHAURI PRADEEP KUMAR. P. S. RANA
260 _bAPH PUB
_aNEW DELHI
_c2014
300 _a270
_bP. B. K.
942 _cDELED
999 _c449
_d449