Extraction '90 : a five-day symposium / organised by the Dounreay Nuclear Power Development Establishment and the Institution of Chemical Engineers (Scottish Branch) and held at Dounreay Nuclear Power Establishment, Caithness, 10-14 September 1990 ; organising committee, W. Batey ... (et al.). - Batey, W. (Symposium series (Institution of Chemical Engineers (Great Britain)), 1990)