Encyclopedia of science the essential multimedia reference guide to science and technology CD-Rom / 1994 / Engelsk
Encyclopedia of nature the essential multimedia reference guide to the natural world CD-Rom / 1995 / Engelsk
History of the world the essential multimedia reference guide to world history CD-Rom / 1995 / Engelsk
World reference atlas the ultimate electronic reference guide to the nations of the world CD-Rom / 1995 / Engelsk
The way things work a unique mammoth guide to a magical world of machines, inventions, and technology Macaulay, David CD-Rom / 1994 / Engelsk
Encyclopedia of space and the universe the ultimate interactive guide to space CD-Rom / 1996 / Engelsk
