00459nam a2200157Ia 450000500170000000800460001703700110006304000200007404100130009408400240010710000220013124500880015326000090024130000140025054600370026420250508164813.0008  250505s9999    xx            000 0 eng d  aTheses  aFEDLbengcFEDL  aeng2eng  a371.3, SIV/THqFEDL  aSivaraj Pandian S 0aEffectiveness of computer-assisted instruction in biology at secondary school level  c2003  avii,200p.  aPh. D. Thesis (Delhi University)