00835nam a2200229 i 450000500170000000800410001704000190005805000120007710000290008924500960011826401020021426400110031630000530032733600210038033700250040133800230042649000270044965000320047670000380050870000320054683000270057820231121163559.0230327s1989    ii ao  g      000 0 eng d  aUIAMbengerda04aQ181.A21 aSen Gupta, D.P.,eauthor10aWhat on earth is energy? /cD. P. Sen Gupta ; illustrated by B. G. Gujjarappa, Samir Mandol 1aNew Delhi :bPublication Department, National Council of educational Research and Training,c1989 4c©1989  a84 pages :billustrations, photographs ;c28 cm.  atext2rdacontent  aunmediated2rdamedia  avolume2rdacarrier 1aPopular science series 0aSciencexStudy and teaching1 aGujjarappa, Bi. Ji.,eillustrator1 aMandol, Samir,eillustrator 0aPopular Science series