Report on specific terms of reference for a new working group on the effects of sand and gravel extraction
de Groot, S.J. (1985). Report on specific terms of reference for a new working group on the effects of sand and gravel extraction. CM Documents - ICES, C.M. 1985(E:5). International Council for the Exploration of the Sea: Copenhagen. 8 + appendices pp.
Part of: ICES CM Documents - ICES. ICES: Copenhagen. ISSN 1015-4744