“…Actually, Isard's attempt reflects an earlier idea of Ohlin (1993) who proposed the development of a "general localization theory" by integrating trade theory and location theory. 13 However, as explained later, such earlier attempts to develop a general location theory were, unfortunately, doomed to 12 Early examples of Nonmonocentric Urban Models are Ogawa and Fujita(1980), Fujita and Ogawa(1982), and Fujita (1988). For a systematic exposition of such models, see, for example, Fujita (1990), Baumont and Huriot (2000), and Fujita and Thisse (2001, Chs.…”