De Clerck, R. (1977). Belgium, in: Jones, R. Demersal fish (Northern) committee 1976. CM Documents - ICES, C.M. 1977(F:1): pp. 1-2
In: Jones, R. (1977). Demersal fish (Northern) committee 1976. CM Documents - ICES, C.M. 1977(F:1). International Council for the Exploration of the Sea: Copenhagen. 47 pp., meer
In: ICES CM Documents - ICES. ICES: Copenhagen. ISSN 1015-4744, meer
