Notes: | Includes partly folded tables. "Being a compilation of all matters dealing directly with the subject ... in the publications of the following technical societies of South Africa: 1. The Transactions of the South African Association of Engineers, 1902-1905. 2. The Journal of the Transvaal Institute of Mechanical Engineers, 1903-1911. 3. The Proceedings of the South African Institution of Engineers (which is an amalgamation of the two previous societies), 1911-1918, and under whose authority the present volume is issued." committed to retain 20170930 20421213 HathiTrust
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