Redrafted papers originally "presented at a symposium organized jointly by the Vrije Universiteit Brussel and the Humboldt-Universität zu Berlin on 18...
Redrafted papers originally "presented at a symposium organized jointly by the Vrije Universiteit Brussel and the Humboldt-Universität zu Berlin on 18-19 October, 1991"--P. 4 of cover.