The classical foundations of migration research date from the 1880s with Ravenstein's "Laws of migration", which represent the fi rst comparative analyses of internal migration. While his observations remain largely valid, the ensuing century has seen considerable progress in data collection...

The classical foundations of migration research date from the 1880s with Ravenstein's "Laws of migration", which represent the fi rst comparative analyses of internal migration. While his observations remain largely valid, the ensuing century has seen considerable progress in data collection...