Author: Bosazza, V.I., 1946.:
Title: The petrography and petrology of South African clays.
Description: Johannesburg: V.L. Bosazza, 1946. Small 4to. Pp. xvi,313, frontisp., 17 photogr. plates, 15 figs., bibliogr., index. Orig. cloth. Binding a bit faded, contents fine. - Doctoral thesis. Text printed from typescript original. Scarce original edition published privately by the author. The trade edition appeared in 1948 (London: Lund Humphries).

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