http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sugar beet nutrient deficiency symptoms a color atlas and chemical guide = Şeker pancarı besin yetersizliği belirtileri renkli atlas ve kimyasal rehber
Albert Ulrich, F. Jackson Hills çev. : Kamil Erel.