Here we reproduce the table of contents and the introductory chapter to our book of related essays published by Edward Elgar. These essays deal with the important implications of allowing for the distribution of goods in characteristic space and of producers in geographic space. Although several...

Any set of commodities closely related in consumption and/or in production may be regarded as differentiated products. Close relation in consumption depends on consumers' tastes. Elementary scientific methodology tells that theories aspiring to empirical relevance must be consistent with the...