Karan, P. P. (1967). Bhutan: A physical and cultural geography. Lexington: University of Kentucky Press.
Παραπομπή Chicago StyleKaran, Pradyumna Prasad. Bhutan: A Physical and Cultural Geography. Lexington: University of Kentucky Press, 1967.
Παραπομπή MLAKaran, Pradyumna Prasad. Bhutan: A Physical and Cultural Geography. Lexington: University of Kentucky Press, 1967.
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