English
Booklet by Dr. Clifford Swartz describing scientific and engineering principles behind the Capsela toy system. Capsela is a registered trademark Copyright © 1988 by Play Jour International Ltd. Printed In Hong Kong
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Ebook · Capsela Science Booklet: See How It Works! · Clifford Swartz · Internet Archive
Capsela · Toy · Manual · Science · Booklet · Play Jour