Ellen, David. Scientific examination of documents : methods and techniques / David Ellen. - 3rd ed. - Boca Raton, FL Taylor & Francis 2006. - xiii, 234 p. ill. 25 cm. - International forensic science and investigation series . Includes bibliographical references and index. ISBN: 0849339251 LCCN: 2005-050637 Subjects--Topical Terms: Writing--Identification.Legal documents--Identification. Dewey Class. No.: 363.25/65