While it is not my intention to offer a product endorsement, O'reilly is The Perl Publisher.
O'reilly has begun to offer a subscription service where you can
access and search their catalog beastiary. The minimum is 5 books/month for $9.95.
Eight of the Perl books are available. Personally I'm tickled.
Even though I own 16 of their books, I always want/need another.

I wonder what are an author's thoughts on this, merlyn? Do I still need to kill a tree to
pay for lawyer food, or does a subscription count?

In reply to FYI: O'reilly books online by perigeeV

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