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The second volume of the most popular textbook series for college-level Chinese learners in Taiwan. Teaches 304 characters over 13 lessons. Thanks to 沈唯達 for providing this list!
Practical Audio-Visual Chinese 實用:視聽華語 Volume 2, Second edition. Written and compiled by the National Taiwan Normal University. Published in 2008 by Cheng Chung Book Co., Ltd. ISBN: 978-9570917918.