http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Technical handbook on symbiotic nitrogen fixation
Food and Agriculture Organization of the United Nations
184 pages in various pagings : illustrations ; 22 cm
Includes bibliographical references (page 181).
Rome : Food and Agriculture Organization of the United Nations, 1983