00410nam a2200169Ia 4500003000400000005001700004008004100021020001900062040000700081041000800088082001500096100002400111245003400135260005200169300000900221650001000230OSt20250809100850.0250729s2006    xx            000 0 und d  a978-8184110418  cAL  aeng  a780.7 LAKT  aSingh Y chakradnara  aTechniues of teaching science  aNew DelhibOrbis Books Sonali Publicationc2006  a213p  aMusic