Trewartha, Glenn T. The less developed realm: a geography of its population : A Geography of its population / Glenn T. Trewartha - New York : John Wiley & Sons , 1972 - xi, 449p. ill.; 22 cm. Includes bibliographical references and index. Subjects--Topical Terms: DemographyPopulationPopulation growth Dewey Class. No.: 312 / TRE