J. H. Hartig

D. E. Rathke, J. H. Hartig; Characterization of Toxic Substance Problems in the Great Lakes, Proceedings of MTS/IEEE OCEANS'87 Conference, pp. 1526 - 1530, September 1987.

J. E. Gannon, C. J. Edwards, T. B. Reynoldson, J. H. Hartig; Indicator Approaches Used in the Great Lakes International Surveillance Program, Proceedings of MTS/IEEE OCEANS'86 Conference, pp. 894 - 900, September 1986.