000 00321nam a22001457a 4500
003 OSt
020 _a9789050801841
080 _a500 Ag 81 V
100 _aVipin Agrawal
245 _aVigyan ki baatein
260 _aDelhi
_bShivank Prakashan
_c2017
300 _aviii, 184p.; 23cms
901 _aH2136
942 _2ddc
_cHB
999 _c41200
_d41200