RT Monograph SR 00 A1 Gornig, M. T1 The Historical Development of Planning Law in North-Rhine Westphalia with Relevance to Environmental Protection YR 1996 FD 1996-04 SP 21 PB WP-96-037 PP IIASA, Laxenburg, Austria AV Published LK https://pure.iiasa.ac.at/id/eprint/4989/