Understanding the law sixth edition
Donald L.Carper and john A.mckinsey2012 年出版793 页ISBN：0538473592
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
UNDERSTANDING SOCIAL PROBLEMS SECOND CANADIAN EDITION
2004 年出版540 页ISBN：0471456195
