| 000 | 00364nam a22001337a 4500 | ||
|---|---|---|---|
| 082 | _a519.5 MAS | ||
| 100 | _aMason,Robert D. | ||
| 245 | _aProgrammed learning aid for business and economic statistics | ||
| 260 |
_bLearning systems company _c1970 |
||
| 300 |
_aix,164p. _bill,25cm. |
||
| 500 | _aincludes indexes. | ||
| 650 | _aBusiness and economic | ||
| 942 | _cBK | ||
| 999 |
_c16869 _d16869 |
||