Easton, Peter A. Sharpening our tools : improving evaluation in adult and nonformal education / Peter A. Easton. - Hamburg, Germany : UNESCO Institute for Education, c1996. - xvi, 323 p. : ill. ; 28 cm. - UIE studies ; 4, 1997. . Includes index. Includes bibliographical references. ISBN: 9292010686 (pbk.) Subjects--Topical Terms: Adult education--Evaluation.Non-formal education--Evaluation. Subjects--Index Terms: Education.