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The third and final volume of the Intermediate level of the Hanyu Kouyu series. Thanks to Byzanti for assembling this list!
Hanyu Kouyu 中級漢語口語: Intermediate Spoken Chinese Book 3 (Extra), Revised edition. Edited by Liu Delian and Liu Xiayou. Published in 2004 by Peking University Press. ISBN: 978-7301066331.