%0 Microfilm %A Brown, Larry R. %E National Water-Quality Assessment Program (U.S.) %E Geological Survey (U.S.) %I U.S. Geological Survey %D 1998 %C Sacramento, Calif. %G English %B U.S. Geological Survey open-file report ; %T Assemblages of fishes and their associations with environmental variables, lower San Joaquin River drainage, California