Part I: Conceptual and Historical Contributions -- Part II: International Migration -- Part III: Migration Effects on Destination Areas -- Part IV: Migration Effects on Sending Areas -- Part V: Migration and Policy.

This paper presents a simple Chamberlinian agglomeration model which, like the canonical core-periphery (CP) model, contains two agglomerative forces. However, in contrast to that model, the present model is analytically solvable. Moreover, the present model exhibits a 'supercritical pitchfork...