Hello
The Principles of Weed Control 4th edition recently released by the California Weed Science Society is now available in both E book ($13.99), and printed version ($50) at http://www.barnesandnoble.com/w/principles-of-weed-control-steven-a-fennimore/1120944806?ean=9780692304822&itm=1&usri=principles+of+weed+control+4th+edition
Thanks,
Steve Fennimore
