Patterson, George N., author
The unquiet frontier Border tensions in the Sino-Sovietconflict
International Studies Group, 1966
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Patterson, George N., author
The Uniquet frontier : border tensions in the Sino-Soviet conflict / George N. Patterson
International Studies Group, 1966.
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Quality and qualities: tensions in education reforms
Clementina Acedo, Don Adams, Simona Popa, editor
[Sense, ], 2012
 eBooks
Cole, John W., author
The Hidden frontier
Academic Press, 1974
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Frontier Society
Martinus Njhoff, 1971
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