Patterson, George N.
The Uniquet frontier : border tensions in the Sino-Soviet conflict
International Studies Group, 1966.
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Cole, John W.
The Hidden frontier
Academic Press, 1974
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Dobson, Rosemary
Over the frontier
Angus & Robertson, 1978
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Frontier Society
Martinus Njhoff, 1971
Buku Teks SO
Frontier Society
Martinus Njhoff, 1971
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