Vorlage:OLS89
Aus WORLDFISH WIKI
- Olson, D.E. & Cunningham, P.C. 1989. Sport-fisheries trends shown by an annual Minnesota fishing contest over a 58-year period. North American Journal of Fisheries Management, 9 (3): 287-297. doi: 10.1577/1548-8675(1989)009%3C0287:SFTSBA%3E2.3.CO;2