Advanced Perl Programming is a 1997 book by Sriram Srinivasan which covers complex techniques needed in production level Perl.
It contains a different set of high-level programming techniques intended for practical use, and is described at www.oreilly.com.
Charles Stross called Advanced Perl Programming's sections on networking and object-oriented programming "well-nigh indispensable".
[1] Eric S. Raymond called Sriram Srinivasan's commentary on the Perl language "uniformly intelligent, incisive and tasteful".
[2] Donald Bryson of Network Computing magazine called the book "full of useful information, well written, beautifully set, and technically accurate".