Herren, R.V. Agricultural mechanics : fundamentals & applications / Ray V. Herren. - 5th ed. - Clifton Park Thomas Delmar Learning, 2006. - xiii, 800 p. : ill.; Hbk Includes index. ISBN: 1401859569 Subjects--Topical Terms: Agricultural mechanics. LC Class. No.: S675.3.C6 / 2006