W.R. Haag

Changing perspectives on pearly mussels, North America’s most imperiled animals
Strayer, David L., J.A. Downing, W.R. Haag, T.L. King, J.B. Layzer, T.J. Newton, and S.J. Nichols. 2004. “Changing Perspectives On Pearly Mussels, North America’s Most Imperiled Animals”. Bioscience 54: 429-439.