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020 # # |a 0877780560  
039 # 9 |y 201511041612  |z VLOAD 
090 0 0 |a 371.3   |b INS 
245 0 0 |a Instructional systems. 
260 # # |a Englewood Cliff:   |b Educational Technology,   |c 1973. 
300 # # |a 138p:   |b ill;   |c 28cm. 
490 0 # |a The Educational Technology Review Series 
650 # 0 |a Teaching-Addresses, essays, lectures  
650 # 0 |a Educational technology  
650 # 0 |a Curriculum planning-Addresses, essays, lectures