TY  - BOOK
AU  - Thorp,James H.
AU  - Covich,Alan P.
TI  - Ecology and classification of North American freshwater invertebrates
PY  - 1991///
CY  - San Diego, CA
PB  - Academic Press
KW  - Freshwater invertebrates
KW  - Ecology
KW  - North America
KW  - Classification
N1  - References : p. 852 - 858
ER  -