00860nam a22002417a 450000500170000001000130001702000230003002000260005303500130007903700160009204000120010808200150012010000300013524501050016526000380027027000500030830000290035865000190038765000380040694200240044499900190046895201310048720170124110025.0  aB-211116  c400.00a8175411600  c400.00a9788175411609  aB-211116  bCen Lib/Ret  aDPLbEN  a507.8bKAL  aKalra, Rajinder M.920468  aTeaching of science :cby Rajinder M Kalra bfor primery and secondary pre and in-service teachers /  aDelhibShipra Publications c2003  a115-A, Vikash Marg, Shakarpur bDelhie110092  a191p. :c21cm(pbk)bill.  aScience910795  aScience--Study and teaching94704  2ddccENh507.8mKAL  c127424d127424  001040718REFaLbLd2015-06-29eCen Lib/Retg400.00l0o507.8 KALpB-211116r2015-06-29 00:00:00t1v400.00w2015-06-29yEN