Check country and provincial/state geological survey websites for reports, articles, data and maps. For example:
Journals may or may not be peer-reviewed. To be certain, look up the journal title in Ulrichsweb.
Williams, D.A. and Trotter, RJ., 1984. Preliminary hydrogeological investigation of Prince Edward County: Phase I. Geology. Prince Edward Conservation Authority, unpublished.
The PECA was subsumed by Quinte Conservation. QC was contacted directly to see if they had a copy (they did).
Publication coverage: 1980 - present. A comprehensive, international and interdisciplinary database covering physical and human geography, geology, ecology, and Third World studies. Over 600,000 abstracts of more than 2,000 journals, monographs, books, conference proceedings, reports, and theses. (more info)