You are not currently logged in.
Access JSTOR through your library or other institution:
The Barrier Boundary of the Mediterranean Basin and Its Northern Breaches as Factors in History
Ellen Churchill Semple
Annals of the Association of American Geographers
Vol. 5 (1915), pp. 27-59
Stable URL: http://www.jstor.org/stable/2560716
Page Count: 33