Titlebook: Fungi in vegetation science; W. Winterhoff Book 1992 Springer Science+Business Media Dordrecht 1992 Vegetation.algae.biocoenosis.botanics.

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Demographic Perspectivesere were 3 million persons over 65 years of age, which represented 4% of the total population. Elderly persons totalled 9 million or 7% of the population in 1940, and 24 million or 11% of the population in 1980. The United States Census Bureau estimates that elderly persons will number 57 million or

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