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Gold remains by far the most important mineral, despite a decline in production of
nearly 30 percent in the 1970s. A spectacular increase in the international price
of gold allowed gold revenues in South Africa to grow from R 900,000,000 in ...
Much applied research and development work is going on throughout the world
to meet these aims. New methods of processing ores and producing
agglomerated products for the blast furnace are being developed. Methods for
producing and ...
More than 60 percent of the paddy fields are double cropped and nearly two-
thirds of the rice produced is higher-grade pon-lai rice, introduced by the
Japanese. With improved farming techniques, including increased and more
effective use of ...
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LibraryThing ReviewUser Review - keylawk - LibraryThing
This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review