TY - BOOK AU - Frood,G.E.B. AU - Hall,A.L. TI - The nitrate occurrences in the districts of Prieska & Hay, Cape province: by G.E.B. Frood and A. L. Hall T2 - Geological survey memoir AV - QE324 .A3 no. 14 PY - 1919/// CY - Johannesburg PB - Argus print. and publ. co., ltd. KW - Nitrates KW - Geological surveys N1 - At head of title: Union of South Africa, Department of Mines and Industries; With: The geology of the Murchison range and district / by A.L. Hall. Pretoria : The Govt. Print. and Stationary Office, 1912. Bound together subsequent to publication; Includes bibliographical references ER -