Tipper, H. W. Revision of the Hazelton and Takla groups of central British Columbia. - Ottawa, Queen's Printer, 1959. - vii, 51 p. maps (1 fold. col. in pocket) diagrs. Bibliography: p. 49-51. LCCN: gs 59000149 Subjects--Topical Terms: Geology, Stratigraphic--Mesozoic.Geology--British Columbia. LC Class. No.: QE185 / .A43 no. 47