Etherton, A. R. B. A new certificate comprehension course A. R. B. Etherton - 6th ed. - Hong Kong Longman 1969 - X, 163 p. fig. 21.5 cm Subjects--Topical Terms: Standard English usageİngilizce'nin kullanımıEnglish language --Textbook for foreign learners Dewey Class. No.: 428.2 ETH