00554nam a2200169Ia 4500008004100000020002200041040001900063041001200082082002800094100001800122245010200140260005400242300003200296504001900328650002700347850001000374131103s9999    xx            000 0 und d  a706997190cRs.150  aLoreto College  aEnglish  a371.33/AGGbLCLIB/41838  aAggarwal,J.C.  aEssentials of educational technologyb teaching learning; innovations in education cJ.C.Aggarwal  aNew DelhibVikas Publishingc1995 (2000 printing)  axi,463 p.b illus.c 22 cm.  aIncludes index  aEducational Technology  aLCLIB