Programmed learning aid for business communications
| मुख्य लेखक: | |
|---|---|
| अन्य लेखक: | |
| स्वरूप: | पुस्तक |
| भाषा: | English |
| प्रकाशित: |
Homewood, Ill.
Learning Systems Co.
c1976.
|
| श्रृंखला: | Irwin programmed learning aid series
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| विषय: |