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1. Programmed learning aid for using the Metric system

by Robert D. Mason; Walter H. Lange.

Edition: 1st ed.Publisher: Homewood, illinois Learning Systems 1976Availability: Items available for loan: Central Library, BUET [001.642/MAS/1976] (3).

2. Programmed learning aid for accounting for governmental and nonprofit entities

by Hay, Leon E; Engstrom, John H; Hermanson, Roger H.

Edition: 1st ed. Publisher: Illinois Learning Systems Company 1981Availability: Items available for loan: Central Library, BUET [657.3/HAY/1981] (4).

3. Programmed learning aid for life insurance

by Mehr, Robert I; Montigney, Brian; Hermanson, Roger H.

Edition: 1st ed.Publisher: Illinois Learning Systems 1979Availability: Items available for loan: Central Library, BUET [368.3/MEH/1979] (4).