Jstor offers a comprehensive collection of journals and other sources with scholarly content. Although it is based on a paid subscription and partnership with institutions and libraries, one can still access full texts of early journal content for free. Some libraries have full access to this source.
Un Habitat intranet Library - Journals (go to parent for more)
Cities (Science Direct) Habitat International (Science Direct) Journal of Urban Economics (Science Direct) Land Use Policy (Science Direct) Progress in Planning (Science Direct) World Development (Science Direct)