. "Offord, Derek (1946-....)"@fr . "Derek Offord" . "1946"^^ . "1946"^^ . "Derek" . "2019-09-24" . . "http://catalogue.bnf.fr/ark:/12148/cb120542647" . "Offord" . "1946"^^ . . "12054264" . . . "2017-10-10" . "12054264" . "Derek"@fr . . "61565541" . . . "61565541" . "Offord"@fr .