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The greater metropolitan area has a total population of about 1 , 500 , 000 ;
loosely known as “ Greater Johannesburg , ” it consists of a municipal and a
magisterial area . Johannesburg grew at a remarkable speed after the dis -
covery of gold ...
Oxygen is a well - known poison to many biological processes , and in
contemporary higher organisms the mitochondria that handle molecular oxygen
are kept in the cytoplasm , far from contact with the nuclear material . Even today
In the first equipment of this type , known as the catoptric system , paraboloidal re
- flectors concentrated the light into a beam . William Hutchinson of Liverpool in
1777 produced the first practical mirrors for lighthouses , consisting of a large ...
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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