http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Control of Certain Ditchbank Weeds On Irrıgation Systems
J.M.Hodgson,V.F. Bruns, F.L.Tımmon S.W.O.Lee,L.W. Weldon,And R.R. Yeo