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With his brother Richard (Carl Wil elm Theodor) von Hertwig, he investigated the
formation of the coelom (body cavity) and the gemt-layer theory, which proposes
that all organs and tissues derive variously from three asic tissue layers. Hertwig
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7:30g -collective bargaining efl'ects on income 10:565e passim to 56% economic
development theories 6:202a economic theory based on supply and demand ...
18, 1851, Berlin), mathematician who, with Niels Henrik Abel of Norway, founded
the theory of elliptic functions. In 1827 he became extraordinary professor and in
1829 ordinary professor of mathematics at the University of Konigsberg. He first ...
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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