00621nam a22001932  4500001001100000005001700011008004100028020001700069040001500086100003300101245011800134250001300252260003400265300001700299650004000316700003400356700003400390852000300424000000969220151217155218.0081117s         xx           000 0 eng d  a0023528907 :  aKABUcKABU1 aHeinich, Robert.@000016143010aInstructional media and the new technologies of instruction /cRobert Heinich, Michael Molenda, James D. Russell.  a2nd  ed.  aNew York :bMacmillan,c1985.  axiv, 414  p. 0aEducational technology.@00001535501 aMolenda, Michael.@00001614311 aRussell, James D.@00001614321