00425nam a2200145Ia 450000500170000000800460001703700120006304000200007504100130009508400220010810000250013024500690015526000450022430000100026920250508162749.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDLbengcFEDL  aeng2eng  a371.39, PILqFEDL  aPillay G. Subramania 0aInstructional designing: Information on instructional technology  aMadurai, IndiabNirmal Publicationc1991  a159p.