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MARIE D.NATOLI2005 年出版522 页ISBN：
UNDERSTANDING CONTEMPORARY LATIN AMERICA SECOND EDITION
RICHARD S.HILLMAN2001 年出版400 页ISBN：
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T.R.VAN GEEL1997 年出版155 页ISBN：080131741X
UNDERSTANDING SOCIETY:AN INTRODUCTORY READER SECOND EDITION
2005 年出版431 页ISBN：0534588158
UNDERSTANDING AND MANAGING RISK ATTITUDE SECOND EDITION
2007 年出版183 页ISBN：9780566087981
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UNDERSTANDING MANAGEMENT:A MODULAR TEXT SECOND EDITION
1998 年出版247 页ISBN：0030448980
UNDERSTANDING DATA COMMUNICATIONS AND NETWORKS SECOND EDITION
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UNDERSTANDING FOOD:PRINCIPLES AND PREPARATION SECOND EDITION
AMY BROWN2004 年出版582 页ISBN：
UNDERSTANDING AND USING ENGLISH GRAMMAR SECOND EDITION
BETTY SCHRAMPFER AZAR2222 年出版411 页ISBN：
