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From: Prazdny%SRI-KL@sri-unix.UUCP
Newsgroups: net.ai
Subject: Re: The Four-Color Problem
Message-ID: <17403@sri-arpa.UUCP>
Date: Thu, 8-Mar-84 12:59:26 EST
Article-I.D.: sri-arpa.17403
Posted: Thu Mar  8 12:59:26 1984
Date-Received: Tue, 13-Mar-84 07:53:42 EST
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From:  Slava Prazdny 

re: the 4-color problem
A nice overview paper by the authors is in "Mathematics Today",
L.A.Steen (ed),Vintage Books, 1980.