Books by Justine Welch:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Welch, Justine: The impact of inorganic phosphates in the environment : final report (Office of Toxic Substances, U.S. Environmental Protection Agency, 1978), also by United States Environmental Protection Agency Office of Toxic Substances (page images at HathiTrust)- Welch, Justine: The impact of inorganic phosphates in the environment : final report (Environmental Protection Agency, Office of Toxic Substances, 1978), also by United States Environmental Protection Agency Office of Toxic Substances (page images at HathiTrust)
- Welch, Justine: Proceedings of the EPA Workshop on the Environmental Scoring of Chemicals, Washington, D.C., August 13-15, 1979 (The Division ;, 1980), also by D.C.) EPA Workshop on the Environmental Scoring of Chemicals (1979 : Washington, Robert H. Ross, Oak Ridge National Laboratory. Health and Environmental Studies Program, and United States. Environmental Protection Agency. Office of Toxic Substances. Assessment Division (page images at HathiTrust)
Find more by Justine Welch at your library, or elsewhere.