A GUIDE TO UNDERSTANDING LAND SURVEYS SECOND EDITION
STEPHEN V.ESTORINAL1993 年出版226 页ISBN：
UNDERSTANDING HEALTH POLICY A CLINICAL APPROACH SECOND EDITION
THOMAS S.BODENHEIMER1998 年出版322 页ISBN：
UNDERSTANDING HEALTH POLICY A CLINICAL APPROACH RIRST EDITION
THOMAS S.BODENHEIMER2222 年出版0 页ISBN：
Computer Simulation and Computer Algebra Lectures for Beginners
1988 年出版155 页ISBN：3540189092
Understanding microbes an introduction to a small world
Jeremy W.Dale2013 年出版230 页ISBN：1119978800
UNDERSTANDING LAW IN A CHANGING SOCIETY THIRD EDITION
BRUCE E.ALTSCHULER2010 年出版511 页ISBN：1594517177
UNDERSTANDING INTERMEDIATE ALGEBRA:A TEXT/WORKBOOK SECOND EDITION
LEWIS HIRSCH ARTHUR GOODMAN1991 年出版967 页ISBN：0314812989
