- & KNAPP, B. [. (1981). Practical foundations of physical geograpgy. George Allaen and Unwin.
Chicago Style (17th ed.) Citation- and Brian [Ed.] KNAPP. Practical Foundations of Physical Geograpgy. London: George Allaen and Unwin, 1981.
MLA citiranje- and Brian [Ed.] KNAPP. Practical Foundations of Physical Geograpgy. George Allaen and Unwin, 1981.
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