00523nam a2200169Ia 450000500170000000800460001703700120006304000200007504100130009508400220010810000230013024500840015326000400023730000130027749000380029065000250032820250508162509.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDLbengcFEDL  aeng2eng  a001.61, LOGqFEDL  aLogan Robert S Ed. 0aInstructional systems development: An international view of theory and practice  aNew York, USAbAcademic Pressc1982  axi,232p.  aThe Educational Technology Series  aInstructional System