YANG Bingyun Au. Language Policy A systemic functional linguistic apporach YANG Bingyun Au.; WANG Rui Au. - New York Routledge Tylor & Francis Group New 2017 - 137p. cm. - China Prespectives series CEL . ISBN: 9781138218840 Standard No.: 47,001 Source: Textual Dewey Class. No.: V41:1(P). P1, Q7