PRESENTATION OF THE THIRD EDITION BACKGROUND The ECLAS thesaurus dates from 1978, when the catalogues of the Central Library of the Commission of the European Communities were computerised. [...] In the absence of an existing thesaurus satisfying the requirements for such holdings, the ECLAS thesaurus was based on the Macrothesaurus of the OECD (the Organisation for Economic Cooperation and Development ) to which additional terms specific to the needs of the Library were added. [...] Θ2) 01.01.02 B i l a t e r a l aid 1 01.02.01 B i l a t e r a l r e l a t i o n s 98 07.07.05 B i lbe r r i e s 1 B i lha rz i a s i s USE: Schistosomiasis (15.Θ4. [...] Group leaders USE: Social workers (13.09.09) 01.03.03 Group of 77 1 SN: group of States which, having taken part in the Conference of Algiers in 1967 for the purpose of preparing the assembly of the UNCTAD, compiled a list of requirements of under-developed countries 1 3. 0 3. 0 2 Group work 1 SN: work undertaken in groups, which does not necessarily involve the dependence of one worker's duties o [...] For industrial cooperation between enterprises, use "Intercompany agreements" 08.02.01 I n d u s t r i a l cooperatives 1 08.02.04 I n d u s t r i a l c r ed i t 10 07.07.02 I n d u s t r i a l crops 1 I n d u s t r i a l democracy USE: Worker participation (13.06.00) 08.03.00 I n d u s t r i a l design 1 08.01.02 I n d u s t r i a l development 160 12.06.00 I n d u s t r i a l drawing 2 SN: accur