XPER Knowledge Base Expert System for the Commodore 64 by Abacus. Rare. Used.

Power Plan spreadsheet software for the Commodore 64 by Abacus. Rare. Sealed.

2 Sealed GeoSafari Knowledge Pad Math PC CDs (See Pics for specific topics)

Spirent Abacus 5000 AB3-3150 13-slot rack-mountable chassis used

GeoSafari Knowledge Pad Beginning Math PC CD kids learn counting, matching game!

Scholastic Knowledge Adventure Grammar Games CD ROM Discover Learn Excel Ages 9+

ALL-BRICK-0482 ALLNET Brick?R?knowledge Dreier Set ~D~

ALL-BRICK-0460 ALLNET 130197 Brick?R?knowledge Gold ~D~