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2
Communicating naturally in a second language : theory and practice in language teaching / Wilga M. Rivers
Cambridge [Cambridgeshire] ; Cambridge University Press, 1983
ix, 243 p. ; 23 cm.



3
Interactive language teaching / edited by Wilga M. Rivers.
Cambridge [Cambridgeshire] ; Cambridge University Press, 1987
xviii, 228 p. : ill. ; 24 cm.