000 00418nam a2200145Ia 4500
008 190329s9999||||xx |||||||||||||| ||und||
040 _aNITIL
_cNITIL
082 _221st
_a508.54
_bV831B
100 _aVishnoi,Harsaran Sigh Dr.
245 0 _aBhartiya Vigyan ki kahani
_cDr.Harsharan Singh Visnnoi
260 _aDelhi
_bLokpriya Prakashan
_c1962
300 _a166pg,
650 _aSCIENCE,GERNAL LNOWLEDGE,
942 _cBKS
999 _c80756
_d80756