When these sections are covered by a different copyright, the seperate copyright is noted. These restrictions are here to protect us as authors, not to restrict you as educators and learners. The author is not liable for any damages, direct or indirect, resulting from the use of information provided in this document. Copyright Oc 1994 Olaf Kirch Kattreinstr. La Licencia Publica General de GNU citada puede reproducirse bajo sus propias condiciones.
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