http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Dıagnosıs of Mıneral Defıcıencıes In Plants By Vısual Symptoms
Unıversıty Of Brıstol Agrıcultural And Hortıcultural Research Statıon