TY - BOOK AU - Norford,B.S. TI - Biostratigraphic determinations of fossils from the subsurface of th e Yukon Territory and the District of Mackenzie / PY - 1971/// CY - Ottawa : PB - Department of Energy, Mines and Resources, KW - Fossils KW - Northwest Territories KW - Mackenzie N1 - Includes bibliographical references ER -