... and, frankly, the science/craft/whatever of developing algorithms has not seen major changes since the publication date (Published: August 18, 1999) that obviate the value of the known text. Yes, Perl has changed; been enhanced; and so on, but the book merely uses Perl as a vehicle for "Mastering Algorithms."
Of course, if you find exclusively Perl4 syntax, you'll have to adjust (and I'll have to take my foot from my mouth).
In your shoes, I'd select from among O'Reilly, Amazon (both of which have the book in their current catalogue) or among used book dealers for any edition (if there is more than one).
Updated, to include pub date and sellers -- after doing the minimal googling that OP should have done.
If I've misconstrued your question, my apologies go to all those electrons which were inconvenienced by the creation of this post.
