Environmental Geochemistry and HealthJune 1994, Volume 16, Issue 2, pp 40–40 | Cite asGuest editorialAuthorsAuthors and affiliationsRon FugeArticle 19 Downloads This is a preview of subscription content, log in to check access.Copyright information© Science and Technology Letters 1994Authors and AffiliationsRon Fuge11.Institute of Earth Studies, University of WalesAberystwythWalesUK