TY  - BOOK
AU  - _Michael,Robert 
TI  - _Instructional media and technologies for learning .-6th ed. Heinich,Robert 
SN  - 138591598
AV  - LB1028.3 .H45 1999  
CY  - New Jersey Merrill 1999 
KW  - _Media
N1  - Includes index.; Includes index.
ER  -