Frontier Society
Martinus Njhoff, 1971
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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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Kokot, Jozef
The logic of the Oder-Neisse frontier
Wydawnictwo Zachodnie, 1957
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A treasury of Australian frontier tales
edited by Bill Wannan
Lansdowne Press, 1961
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