Path: utzoo!mnetor!uunet!mcvax!enea!ttds!draken!kth!sics!lhe
From: lhe@sics.se (Lars-Henrik Eriksson)
Newsgroups: comp.lang.prolog
Subject: Re: Strings
Message-ID: <1813@sics.se>
Date: 17 Mar 88 16:03:04 GMT
References: <512@ecrcvax.UUCP> <768@cresswell.quintus.UUCP> <5348@utah-cs.UUCP> <776@cresswell.quintus.UUCP>
Reply-To: lhe@sics.se (Lars-Henrik Eriksson)
Organization: Swedish Institute of Computer Science, Kista
Lines: 17

In article <776@cresswell.quintus.UUCP> ok@quintus.UUCP (Richard A. O'Keefe) writes:
>	ISBN 3-211-81776-X		(can anyone tell me what it means
>	ISBN 0-387-81776-X		for a book to have 2 ISBNs?)

It means it is published at two places at once. For instance, in my copy of
the ALGOL 68 report, you can find the lines:

ISBN 3-540-07545-3 Springer-Verlag Berlin * Heidelberg * New York
ISBN 0-387-07545-3 Springer-Verlag New York * Heidelberg * Berlin

I.e. the first one was printed in Germany, the second one in the U.S.
Note that only the publisher parts of the numbers differ.

Lars-Henrik Eriksson				Internet: lhe@sics.se
Swedish Institute of Computer Science		Phone (intn'l): +46 8 752 15 09
Box 1263					Telefon (nat'l): 08 - 752 15 09
S-164 28  KISTA, SWEDEN