Books by Hisham El-Masri:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
El-Masri, Hisham: Toxicological profile for naphthalene (update) (Agency for Toxic Substances and Disease Registry, 2005), also by Syracuse Research Corporation, United States Environmental Protection Agency, and United States. Agency for Toxic Substances and Disease Registry (page images at HathiTrust)- El-Masri, Hisham: Toxicological profile for naphthalene (update) (U.S. Dept. of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry, 2005), also by Syracuse Research Corporation, United States Environmental Protection Agency, and United States. Agency for Toxic Substances and Disease Registry (page images at HathiTrust)
Find more by Hisham El-Masri at your library, or elsewhere.