EXHIBIT 2.2 AGREEMENT AND PLAN OF MERGER Among HARCOURT GENERAL INC., NICK ACQUISITION CORPORATION and NATIONAL EDUCATION CORPORATION Dated as of May 12, 1997 AGREEMENT AND PLAN OF MERGER AGREEMENT AND PLAN OF MERGER, dated as of May 12, 1997 (the...Merger Agreement • May 14th, 1997 • National Education Corp • Services-educational services • Delaware
