Strahler A. N., And Strahler A. H., . (1983). Modern Physical geography. : John Wiley & Sons.
Strahler Arthur N, And Strahler Alan H, . 1983. Modern Physical geography. : John Wiley & Sons.
Strahler Arthur N, And Strahler Alan H, . Modern Physical geography. : John Wiley & Sons. 1983.
