Van Valkenburg Samuel Elements of political geography Van Valkenburg Samuel; Stotz Carl L - 2nd - 1946 - Prentice Hall geography series ed by Nels A Bengtson . Standard No.: 89,572 Source: Textual Subjects--Topical Terms: GEOPOLITICS Dewey Class. No.: U5.1, H6;K3-;1 (TU)