Holden, J. (2008). An introduction to physical geography and the environment (2nd ed.). Harlow: Pearson Prentice Hall.
Παραπομπή Chicago StyleHolden, Joseph. An Introduction to Physical Geography and the Environment. 2nd ed. Harlow: Pearson Prentice Hall, 2008.
Παραπομπή MLAHolden, Joseph. An Introduction to Physical Geography and the Environment. 2nd ed. Harlow: Pearson Prentice Hall, 2008.
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