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Improved dating methods have increased our ability to more precisely determine the timing and durations of glaciations. Stratigraphic sections containing a variety of glacial deposits, some with interbedded volcanics, as well as loess deposits, were used in reconstructing the glacial history. This title deals with this topic.

Communication disabilities are common, although their precise nature and degree of severity vary greatly among individuals. They are among the most handicapping of disabilities because they isolate a person and in so doing restrict social, educational, and occupational opportunities. One of the purposes of this book was to bring together theoretical, practical, and clinical knowledge from several disciplines that bear on language and communication into some reasonably accessible form. The intent is to provide a broad and multi-faceted view of language development and language disorders. Thus,...