TY - RPRT CY - IIASA, Laxenburg, Austria ID - iiasa4989 UR - https://pure.iiasa.ac.at/id/eprint/4989/ A1 - Gornig, M. Y1 - 1996/04// PB - WP-96-037 M1 - working_paper TI - The Historical Development of Planning Law in North-Rhine Westphalia with Relevance to Environmental Protection AV - public EP - 21 ER -