TY  - BOOK
AU  - Knirk,Frederick G.
AU  - Childs,John W.
TI  - Instructional technology: a book of readings 
SN  - 0030719208
PY  - 1968///
CY  - New York
PB  - Rinehart and Winston,  Holt
KW  - Educational innovations
N1  - Includes bibliographical references and index
ER  -