Smardon, Richard C. creator Palmer, James F. Felleman, John P. text S.l.] Wiley-Interscience 1986 1st ed. monographic 374 p. ; Landscape assessment 0471881848 (hardcover) 9780471881841 (hardcover) http://www.amazon.com/exec/obidos/ASIN/0471881848/chopaconline-20 http://www.amazon.com/exec/obidos/ASIN/0471881848/chopaconline-20