Aquatic Oligochaete Biology IX: Selected Papers from the 9th Symposium on Aquatic Oligochaeta, 6-10 October 2003, Wageningen, the Netherlands (Hardcover)
Aquatic Oligochaete Biology IX: Selected Papers from the 9th Symposium on Aquatic Oligochaeta, 6-10 October 2003, Wageningen, the Netherlands (Paperback, 2006)