000 00306nam a2200133Ia 4500
003 PTTI
005 20251207204952.0
008 251207s9999 xx 000 0 und d
020 _c260/-
040 _aPTTI
245 0 _aPARIVESH SHIKSHA
_cDR. SK DUTTA
260 _bRITA
_aKOLKATA
_c2017-2022
942 _cDELED
999 _c1840
_d1840