  An Application of Item Response Theory to Language Testing [Theoretical Studies in Second Language Acquisition] (Hardcover) ISBN-13: 9780820415734 ISBN-10: 0820415731 Genres: Reference, Nonfiction ?  Studies in Language Testing 1 an Investigation Into the Comparability of Two Tests of English As a Foreign Language [Studies in Language Testing] (Hardcover) → Paperback ISBN-13: 9780521481670 ISBN-10: 0521481678 Genre: Reference ?  Studies in Language Testing 1 an Investigation Into the Comparability of Two Tests of English As a Foreign Language [Studies in Language Testing] (Paperback) → Hardcover ISBN-13: 9780521484671 ISBN-10: 0521484677 Genre: Reference ? |
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