Dubey, R. N. (1974). Economic and commercial geography (14th ed.). Kitab Mahal.
Chicagoスタイル(17版)引用形式Dubey, Ram Nath. Economic and Commercial Geography. 14th ed. Allahabad: Kitab Mahal, 1974.
MLA(9版)引用形式Dubey, Ram Nath. Economic and Commercial Geography. 14th ed. Kitab Mahal, 1974.
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