Experiences from Developing Countries: This publication contains the main papers presented at the Expert Group Meeting on Assessing Regional Development Planning in the Management of Urbanization, Nairobi, May 1997. Three main questions that were addressed were: (i) Policies which aim to control migration from rural to urban areas; (ii) The effectiveness of national-regional and city-region policies in managing urbanization and stimulating socio-economic development; and (iii) Improvement of the conceptual basis and implementation tools of regional development planning.