00458nam a22001457a 4500999001900000005001700019010001400036037001900050245007000069260003400139270006700173300003000240700002500270942001700295  c196088d19608820230525170958.0  aCHEN25523  aRainbow Books   aScience Encyclopedia bcompiled and edited by Aakanksha and Anand  aDelhi bRainbow Books c20198  aF-32, Street No.12, Parwana Road, Jagat Puri, bDelhi e110051  a104p.bcol.ill.c25cm(Hb)  aAakanksha and Anand   2ddccCHmRAI