Legal Notice
Copyright © Raymond Bradley and Norman Swartz, 2010
Although Possible Worlds: An Introduction to Logic and Its Philosophy (the "Book") is being made available for download on the World Wide Web (WWW), it is not in the public domain. The authors, Raymond Bradley and Norman Swartz, hold and retain full copyright.

All persons wishing to download a copy of this Book, or parts thereof, for their own personal use, are hereby given permission to do so.

Similarly, all teachers and schools (e.g. colleges and universities) are given permission to reproduce copies of this Book, or parts, for sale to their students provided that the selling price does not exceed the actual cost of reproduction, that is, neither this Book nor any of its parts may be sold for profit.

Any commercial sale of this Book, or its parts, is strictly and explicitly forbidden.

Electronic text (etext), such as this Book, lends itself easily to cut-and-paste. That is, it is easy for persons to cut out parts of this Book and to place those parts into other works. If or when this is done, the excerpts must be credited to the authors, Raymond Bradley and Norman Swartz. (See How to cite materials on the Internet.) Failure to provide a proper citation constitutes infringement of copyright and the theft of intellectual property. Would-be plagiarists are cautioned that it is an easy matter to trace any unauthorized quotations from this Book.

The immediately preceding paragraph is, unfortunately, a legal necessity and it may give an incorrect impression. We do hope you will enjoy this Book and will not be deterred by our need to forestall persons misusing this Book.

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