awbook link vanished

Folks,

http://www.postgresql.org/docs/awbook.html used to work, and now it's
vanished.  Where did it go, and what do I use to replace the URLs that
refer to it?

Cheers,
D
--
David Fetter david@fetter.org http://fetter.org/
phone: +1 510 893 6100   mobile: +1 415 235 3778

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