What has the author Mark R Downen written?

Answer 1

Mark R. Downen has written:

'1998 Twin Lakes (Gissburg Ponds) survey' -- subject(s): Fish communities, Fish stock assessment, Fish surveys, Freshwater fishes, Warmwater fishes

'North Cascades National Park high lakes fishery management' -- subject(s): Fishery management, Fishing

'Environmental history and ecology of the San Juan Archipelago'

'1999 Campbell Lake survey' -- subject(s): Fish communities, Fish surveys, Fishery management, Freshwater fishes

'1998 Lake Cassidy survey' -- subject(s): Environmental conditions, Fish communities, Fishery management, Freshwater fishes, Warmwater fishes

'1999 Lake Terrell survey' -- subject(s): Channel catfish, Fish communities, Fish stock assessment, Fishery management, Freshwater fishes, Largemouth bass