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This article is an English translation of the work cited in 46: 3092. The authors review the conclusions of Pivovarov (see 44: Title 3118) concerning the nature of the urbanization process and optimal city size in the USSR. The relationship between urbanization and the characteristics of a given socioeconomic system is examined, and the possibility of determining optimal size for cities of different functional types is evaluated  相似文献   
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This is a philosophical analysis of the concept of urbanization in the contemporary Marxist setting from the geographical and sociological points of view. "The centripetal forces that used to concentrate industry in cities are said to be yielding to opposed centrifugal forces resulting from a combination of technological, ecological and economic processes. The new centrifugal trend has the effect of helping to restrain the growth of very large cities, a Soviet policy goal, and of giving rise to urban agglomerations." The benefits of the decentralization of urbanization are elaborated.  相似文献   
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Oceanology - The OCP and PCB contents in the tissues of beluga whales (Delphinapterus leucas) from the Russian Arctic have been studied for the first time. Skin and subcutaneous adipose tissue...  相似文献   
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