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1par Hough Graham Goulden
Duckworth 1962Livre -
2par Hough Graham Goulden
Duckworth impr. 1960, cop. 1960Livre -
3par Hough Graham Goulden
Routledge & Kegan Paul C 1969Livre -
4par Hough Graham Goulden
Hutchinson University Press 1963Livre -
5par Hough Graham Goulden
Penguin Books 1961Livre -
6par Meredith George
Oxford University Press 1962Livre