1. Freshwater leeches (Annelida: Hirudinea) of North America, by Donald J. Klemm. Klemm, Donald J. [Washington, U.S. Environmental Protection Agency]; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1972. Book Physical Forrestal Annex QL391.H6xK4 Loading...
2. Catalog of pesticide NMR spectra. [Authors: Ann L. Alford and Lawrence H. Keith] Southeast Water Laboratory Washington [Environmental Protection Agency, Research and Monitoring]; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1971. Book Physical Forrestal Annex SB951.S64 Loading...