Aquatic Systems Engineering Books

[Dansbak]

What is the difference between these two books? I own the 1st edition of Aquatic Systems Engineering and it is a great book. I have really enjoyed the skimmer section. I was wondering if anybody has read the expanded edition. Does it contain updated information on skimmers? What are the extra 66 pages? Is it worth reading the expanded edition? See below for book details. -Kyle

Aquatic Systems Engineering: Devices and How They Function
Author: Escobal, Pedro Ramon; Introduction: Moe, Martin A., Jr.
Edition: #1
Pages: 206
Publication Date: May 1996
ISBN: 1888381051

Aquatic Systems Engineering: Devices and How They Function (Expanded)
Author: Escobal, Pedro Ramon; Introduction: Moe, Martin A., Jr.
Edition: #2 Expanded Edition
Pages: 272
Publication Date: May 2000
ISBN: 1888381108

 

[reefkoi]

I heard its out of print and copies are selling for hundreds of dollars whenever you can find them on ebay and whatnot, I dunno if it's true or just rumor.
C