Clark, Thomas Henry, 1893- St. Hyacinthe area (west half): Bagot, St. Hyacinthe and Shefford Counties, by T. H. Clark. - Quebec, 1964. - iii, 128 p. illus., maps (3 fold., 1 col. in pocket) 25cm. - Quebec (Province) Dept. of Natural Resources. Geological report 101 . Bibliography: p. 124-126. LCCN: gs 65000552 Subjects--Topical Terms: Geology--Québec (Province)--Saint-Hyacinthe Region.Borings--Québec (Province)--Saint-Hyacinthe Region. LC Class. No.: QE193 / .A3 no. 101