(19) Stephan, C. E. Methods for calculating an LC50. In Aquatic Toxicology and Hazard Evaluation (edited by F. I. Mayer and J. L. Hamelink). American Society for Testing and Materials, ASTM STP 634, 1977, 65-84.
(19) Stephan, C. E. Methods for calculating an LC50. In Aquatic Toxicology and Hazard Evaluation (edited by F. I. Mayer and J. L. Hamelink). American Society for Testing and Materials, ASTM STP 634, 1977, 65-84.