Titlebook: Introduction to Geochemistry; Claude-Jean Allègre,Gil Michard Book 1974 D. Reidel Publishing Company, Dordrecht, Holland 1974 Libration.Va

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Ecological Genetics: Introduction,tions, the phenotypes of individuals must be related to the ecological context of the population and to the underlying genetic bases of those phenotypes. The interplay between ecology, phenotypes and genotypes is complex. For example, the structure of a population (effective size, system of mating,

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hagic, vesiculo-bullous, phlegmonous, abscendent and gangraenous forms have been distinguished. Since the introduction of the sulphonamide and antibiotic therapy the severe septic forms as well as the fatal cases have become rare [8, 18, 23, 24., 29, 43] and the localization of the disease has chang