http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Water use efficiency and competition between arid zone annuals, especially the grasses Phalaris minor and Hordeum murinum
viii, 109 pages : illustrations ; 24 cm.
Verslagen van landbouwkundige onderzoekingen ; 853