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1nork Caenegem, R. C. van (Raoul C.)“.... ; distributors for the U.S.A. and Canada, Elsevier/North Holland,...”
Argitaratua 1978
Liburua -
2nork IJsewijn, J. (Jozef)“.... ; sole distributors for the U.S.A. and Canada, American Elsevier Pub. Co.,...”
Argitaratua 1977
Liburua