Helmstetter, Shad. You can excel in times of change / Shad Helmstetter. - New York : Pocket Books, 1992. - 258 p. ; 22 cm. ISBN: 0671748890 Subjects--Topical Terms: Change PsychologyAdjustment PsychologySelfactualization Psychology LC Class. No.: BF637.C4 Dewey Class. No.: 158