614.7
D483M
           Detwyler, Thomas R
               Man's impact on environment \ Thomas R Detwyler - New York : McGraw-Hill, 1971.
               xiii, 731p. - Mcgraw-Hill series in georgraphy/ed. by Edward J Taaffe and John W Webb .
                ISBN: 07-016592-0

75772
                Subjects: Human ecology; Social ecology; Human beings-Effect of environment on.