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Multilingual
1
Bancroft, Dennis, 183.1-B213i | The Open University:Blackwell Publishers in association with the Open University | 1995 183.1-B213i,
2
Woodhead, Martin, 375.1-W888b | Routledge | 1991 375.1-W888b,
3
Woodhead, Martin., 331.138-W888b | Routledge | 1990 331.138-W888b,
4
Woodhead, Martin., 331.138-W888g | Routledge | 1991 331.138-W888g,