Human geography in a shrinking world / Ronald Abler ... [et al.]. Abler, Ronald. Human geography. Cities and towns. GF41 .H9 910 ABH Includes Index. Includes bibliographical references and index. North Scituate, Mass. : Duxbury Press, [1975] [1975] 1975 Text 307 p. : eng The man-environment system in the late twentieth century