Brookins, D.G. (1983). Geochronologic studies in Maine?part III: Rb-Sr geochronologic study of the Ellsworth Schist, Maine, and comparison with the Coldbrook group. New Brunswic. Isochron/West Bulletin of Isotopic Geochronology, vol. 38, p. 7-10. Edited by: Schilling, John H. Keywords: Maine