http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
The third edition of this authoritative guide to the European Community plant variety protection system combines comprehensive explanation of the system with practical guidance on obtaining and enforcing protection.
Gert Würtenberger, Paul van der Kooij, Bart Kiewiet, Martin Ekvad.
Includes bibliographical references and index.