UNDERSTANDING ABNORMAL BEHAVIOR SEVENTH EDITION
DAVID SUE DERALD WING SUE STANLEY SUE2003 年出版715 页ISBN：0618270302
UNDERSTANDING CONTEMPORARY AFRICA THIRD EDITION
APRIL A.GORDON AND DONALD L.GORDON2001 年出版477 页ISBN：1555878504
sixth edition Understanding human sexuality
Janet Shibley Hyde and john D.delamater1997 年出版685 页ISBN：0070318026
Understanding the law sixth edition
Donald L.Carper and john A.mckinsey2012 年出版793 页ISBN：0538473592
UNDERSTANDING THE PRESIDENCY THIRD EDITION
EDITED BY JAMES P.PFIFFNER ROGER H.DAVIDSON2003 年出版471 页ISBN：
UNDERSTANDING LABOR LAW THIRD EDITION
DOUGLAS E.RAY CALVIN WILLIAM SHARPE ROBERT N.STRASSFELD2011 年出版398 页ISBN：1422470268
UNDERSTANDING AMERICAN GOVERNMENT EIGHTH EDITION
SUSAN WELCH JOHN GRUHL JOHN COMER SUSAN M.RIGDON著2222 年出版621 页ISBN：0534647499
understanding your health seventh edition
WAYNE A.PAYNE，Ed.D. DALE B.HAHN，Ph.D.2222 年出版772 页ISBN：0072353236
ESSENTIALS OF UNDERSTANDING PSYCHOLOGY SIXTH EDITION
2005 年出版563 页ISBN：0072965037
UNDERSTANDING HUMAN ANATOMY & PHYSIOLOGY FOURTH EDITION
2001 年出版437 页ISBN：0072468068
