The migration of birds : an attempt to reduce abian season-flight to law /

Mode of access: Internet.

The migration of British birds : including their post-glacial emigrations as traced by the application of a new law of disperal being a contribution to the study of migration, geographical distribution, and insular faunas /

Mode of access: Internet.

The impact of IRCA on the migration patterns of a community in Los Altos, Jalisco, Mexico /

"June 1990."