@Article{hess-1-541-1997, AUTHOR = {Crisp, D. T. and Beaumont, W. R. C.}, TITLE = {Fish populations in Plynlimon streams}, JOURNAL = {Hydrology and Earth System Sciences}, VOLUME = {1}, YEAR = {1997}, NUMBER = {3}, PAGES = {541--548}, URL = {http://www.hydrol-earth-syst-sci.net/1/541/1997/}, ISSN = {1027-5606} }