Van Onselen, Charles. Studies in the social and economic history of the Witwatersrand, 1886-1914 / Charles van Onselen. - Harlow, Essex ; New York : Longman, 1982. - v. <2 > : ill. ; 24 cm. Includes indexes. ISBN: 0582643848 (v. 2) 0582643856 (pbk. : v. 2) LCCN: 82015361 LC Class. No.: HC905.Z7 / W558 1982 Dewey Class. No.: 330.9682/2