Ghent

and C.H. Stevenson. 1908. The Book of the Pearl. Century Co., New York. 548 pp. Layzer, J.B., Gordon, M.E., and R.M. Anderson. 1993. Mussels: the forgotten fauna of regulated rivers. A case study of the Caney Fork River. Regulated Rivers: Research & Management 8: 63-71. Lee, R.D. 1973. Allegheny River dredging study, June 1972 - July 1973. Unpublished report, Pennsylvania Fish Commission, Harrisburg. Lewandowski, K. and A. Stanczykowska. 1975. The occurrence and role of bivalves of the family…