Louis A. Helfrich

Understanding Fish Nutrition, Feeds, and Feeding

Steven R. Craig, Louis A. Helfrich, David J. Kuhn et al. · VTechWorks (Virginia Tech) · 2017 · 371 citations · Full text

Agriculture, Fisheries, Nutrition +17

Recreational Specializations and Motivations of Virginia River Anglers

Brian D. Chipman, Louis A. Helfrich · North American Journal of Fisheries Management · 1988 · 176 citations

Natural Resources, Fisheries, Fish Behavior +11

Pesticides and Aquatic Animals: A Guide to Reducing Impacts on Aquatic Systems

Louis A. Helfrich, Diana L. Weigmann, Patricia A. Hipkins et al. · VTechWorks (Virginia Tech) · 2009 · 143 citations · Full text

Veterinary Medicine, Environmental Sciences, Toxicology +14

Determination of sex and maturational status of striped bass (Morone saxatilis) using ultrasonic imaging

Bill Blythe, Louis A. Helfrich, W. E. Beal et al. · Aquaculture · 1994 · 73 citations

Veterinary Medicine, Animal Sciences, Zoology +12

Impacts of Trout Culture Effluent on Water Quality and Biotic Communities in Virginia Headwater Streams

Jason H. Selong, Louis A. Helfrich · The Progressive Fish-Culturist · 1998 · 51 citations

Natural Resources, Ecology, Environmental Sciences +14