00854cam a22002531 4500 gs 55000032 DLC 20260227111402.0 861126s1954 tz ab b f000 0 eng c gs 55000032 (OCoLC)14877054 U.S. Geol. Survey Libr. KWiU DLC QE327.T3 A32 no. 23 Sampson, D. N. (David Noel) Notes for mica prospectors in Tanganyika. [Dar es Salaam, Govt. Printer, 1954] vi, 34 p. illus., map, diagr., tables. 25 cm. Tanzania. Geological Survey Dept. Bulletin no. 23 Bibliography: p. 32. Pegmatites Tanzania. Mica Tanzania. Mines and mineral resources Tanzania. Tanzania. Geological Survey Department. Bulletin no. 23. 28926 28926