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Is there any way this article can be expanded? 207.62.186.233 ( talk) 15:29, 28 February 2008 (UTC)
Afaik it`s not completely clear if he actually had invented them, but they did appear for the first time in his book in printed form. 62.178.137.216 ( talk) —Preceding comment was added at 15:00, 23 March 2008 (UTC)
![]() | This article is rated Stub-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||||||||
|
Is there any way this article can be expanded? 207.62.186.233 ( talk) 15:29, 28 February 2008 (UTC)
Afaik it`s not completely clear if he actually had invented them, but they did appear for the first time in his book in printed form. 62.178.137.216 ( talk) —Preceding comment was added at 15:00, 23 March 2008 (UTC)