00354nam a22001217a 4500008004100000020001500041084001000056100002600066245005600092260005100148546001300199653002000212171101b        xxu||||| |||| 00| 0 hin d  a8190219464  2CCaA  aAgrawal, Ghamandi lal  aPrashno main rasayan vigyan c Ghamandi lal Agrawal  aDelhi :bsahithya chethana prakashan ,c2007 .  aIn hindi  aScience-general