TY - SER ED - Anglo American Corporation of South Africa, ltd. ED - De Beers Consolidated Mines. ED - Anglo american. TI - Optima : (Vol. 1-20): a quarterly review published in the interests of mining, industrial, scientific and economic progress SN - 0030-4050 U1 - 622 OPT 22 PY - 1951///- CY - Johannesburg PB - Anglo American Corporation of South Africa KW - Mineral industries KW - Africa, Southern KW - Periodicals KW - Industries KW - fast KW - Southern Africa N2 - "A review published in the interests of mining, industrial, scientific and economic progress" (varies slightly) ER -