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Map from: Lorenz Luthi, “The Vietnam War and China’s Third-Line Defense Planning before the Cultural Revolution, 1964-1966,” Journal of Cold War Studies, vol. 10,
no. 1, (Winter 2008): pp. 26-51; and Z)*J!r@!a)-/10%&?!LO1#!O1.+!P%&0l!e#9#&$#!Y&+-$0.)(.V)I%&!.&!01#!21.&#$#!Y&0#.%?N!21.&)!y-)0#(J?!a%@SS6!
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