Gerald W. Esch Parasite communities : Patterns and processes - London Chapman and Hall 1990 - 335p Gerald W. Esch; Albert O. Bush & John M. Aho: Parasite communities : Patterns and processes. London. Chapman and Hall, 1990. 0-412-33540-9--(616.96ESC) ENGLISH ISBN: 0-412-33540-9 Dewey Class. No.: 616.96 / ESC