ISBN 9780615174228 books & textbook
PERSPECTIVES ON 21ST CENTURY AGRICULTURE: A Tribute to Walter J. Armbruster.
Knutson, Ronald D. ; Sharron D. Knutson; David P. Ernstes.
Farm Foundation, /2007T Hardcover / 342 Pages
isbn-10: 0615174221 / isbn-13: 9780615174228
