TY  - BOOK
AU  - PackardRobert G.
TI  - Psychology of learning and instruction : : A performance-based course / 
SN  - 0675087619 (pb)
PY  - 1975///
CY  - Ohio : 
PB  - Charles E. merrill Publishing Co., 
N1  - Includes an annotated bibliography and index
ER  -