00327nam a2200121 a 450000500170000000800410001704100080005810000170006624500490008326400430013230000110017570000190018620260717091745.0260717s2000    ii            000 0 eng d  aeng1 aTayal, D. C.10aUniversity practical physics /cTayal, D. C. 1aMumbai :bHimalaya publication,c2000.  a548 p.1 aAgarwal, L. A.