TY  - BOOK
AU  - Mason, Robert D.
AU  - Longe, Walter H.
AU  - Hermanson, R. H.
AU  - Rousos, T. G.
TI  - Programmed learning aid for business and consumer mathematics
U1  - 510. 28658 
PY  - 1978///
CY  - Homewood
PB  - Learning Systems
KW  - Mathematics
ER  -