translate English to French: Environment Canada, National Water Research Institute, Burlington, Saskatoon, NWRI Contribution No. 98-94. Evans, M.S. , L. Lockhart and M. Klaverkamp.
Environnement Canada, Institut national de recherche sur les eaux, Burlington, Saskatoon, Collection de l'INRE no 98-94.  Evans, M.S. , L. Lockhart et M. Klaverkamp.