adj. 1 of ice. 2 Geol. characterized or produced by ice. [Latin glacies ice]

... and generous nature of that period did not. accelerate this process ; only with the advent of the harsh .conditions of the glacial epoch , with the intensification of the labor . activity of the primitive man in his difficult struggle for.existence ... ... the history of primitive . humanity into three different periods : pre-glacial with a warm subtropical .climate , glacial and post-glacial Each of these periods corresponds to a certain physical type . of person : in the preglacial - arheoanthropes ... (The World History)
... itself probably began more than . 100 thousand years ago , in the fourth glacial epoch Most likely , this was due to the development of production . and the primary division of labor There ... (General psychology)
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