Wilken, Sean. creator author Villiers, Theresa. author 2nd ed. lxvi, 534 p. ; Sean Wilken. Rev. ed. of: Waiver, variation, and estoppel. c1998. Includes bibliographical references (p. 505-506) and index. Waiver Estoppel Contracts KD703 WIL 2002 Wilken, Sean. author 0199253218 http://www.loc.gov/catdir/enhancements/fy0613/2002192555-d.html http://www.loc.gov/catdir/enhancements/fy0613/2002192555-t.html http://www.loc.gov/catdir/enhancements/fy0724/2002192555-b.html http://www.loc.gov/catdir/enhancements/fy0613/2002192555-d.html http://www.loc.gov/catdir/enhancements/fy0613/2002192555-t.html http://www.loc.gov/catdir/enhancements/fy0724/2002192555-b.html