|new version of:
"Ecology and Classification of Freshwater Invertebrates"
edited by Thorp & Covich (Academic Press), with an extensively revised chapter on Arachnida by I.M. Smith, D.R. Cook, and B.P. Smith.
(including keys to genera; larvae and adults)
Hardcover - 950 pages 2nd edition (February 15, 2001)
Academic Pr; ISBN: 0126906475