By: Olga Fischer
A critical comparison of morphosyntactic change and the mechanisms that trigger it, this book shows how changes in discourse, lexicon, semantics, pragmatics, and sound interact with changes in morphosyntax, and considers the interface between the internal and external factors of change.
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http://usafiles.net/13T2/Morphosyntactic_Change__Functional_and_Formal_Perspectives.pdf