URLDate
Verified		Extra Software
Requirements
(if any)		Access
Conditions		Notes
http://archive.lib.msu.edu/DMC/turfgrass/PDF/grass[...]01/18/2017PDF Reader
http://babel.hathitrust.org/cgi/pt?id=mdp.39015067[...]07/13/2011PDF Reader
http://babel.hathitrust.org/cgi/pt?id=uc2.ark:/139[...]07/13/2011PDF Reader
http://babel.hathitrust.org/cgi/pt?id=nyp.33433007[...]07/13/2011PDF Reader