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Mullen, Robert E.. Temperature and salinity observations in the Umpqua River estuary, July-October, 1972 In Coastal Rivers Investigation Information Report. Fish Commission of Oregon, Management and Research Division, 1973.
Mullen, Robert E.. Tagging of striped bass in the Umpqua River, 1971-73 In Coastal Rivers Investigation Information Report. Portland, Or.: Fish Commission of Oregon, Management and Research Division, 1974.
McGie, Alan M., and Robert E. Mullen. Age, growth, and population trends of striped bass, Morone saxatilis, in Oregon In Information Report Series. Fisheries. Corvallis, Or.: Oregon Dept. of Fish and Wildlife, Research and Development Section, 1979.