00454nam a2200169Ia 4500008004100000020000900041040001900050041001200069082002400081100001600105245005600121260002700177300002600204650002000230700001600250850001800266131103s9999    xx            000 0 und d  cRs.4  aLoreto College  aEnglish  a570/MENbLCBED/3028  aMendonza, E  aLearning sciene by stagescE Mendonza and Ved Gupta  aDelhibCambridgec1972  a116p.b ills.c 24cm.  aGeneral science  aGupta, Ved   aLCBED/570/MEN