Kell, G., et al. 2003. Pond Life:
A Guide to Common Plants and Animals of North American Ponds and Lakes
(Golden Guide) St. Martin's Press.Patterson, D. J. 1992. Free-Living Freshwater Protozoa: A Color Guide.
Wolfe Publishing. (out of print, but see the first website listed below)
Rainis, K. G. and B. J. Russell.
1996. Guide to
Microlife. Orchard Books.
Smith, D. G.
2001. Pennak's
Freshwater Invertebrates of the United States: Porifera to Crustacea, 4th
Edition. John Wiley &
Sons; 4th edition.
Thorp, J. H. and A. P. Covich. 2001.
Ecology and Classification of North American Freshwater Invertebrates,
2nd Edition. Academic Press.
Voshell, J. R..
2002. A Guide to
Common Freshwater Invertebrates of North America McDonald & Woodward
Pub Co.
Go to
http://books.google.com/ and type in
the following titles to view or download these older classic works that,
while dated, have many illustrations and descriptions of micro-life:
Freshwater Biology by Ward and Whipple 1918
The Life of Inland Waters by Needham and Lloyd
1916
Behavior of the Lower Organisms by Jennings 1906
The Protozoa by Calkins 1901
Marine Protozoa from Woods Hole by Calkins 1902