Science Fair Project Encyclopedia
Category:Public domain encyclopedias
These are encyclopedias for which the copyright of an older edition (early 20th century or earlier) has expired and are therefore in the public domain. Thus, they are free to use for any purpose, although their content is in many cases dated.
Articles from them are free to be incorporated into Wikipedia, although one must be careful to check that the content is not overly dated before doing so, including not only facts, but concepts, perspectives and ideas which have not been been replaced with modern research. These older sources should be supplimentary and not the only, or primary, source.
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Articles in category "Public domain encyclopedias"
There are 13 articles in this category. Last updated: 05-13-2005 00:48:56
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details