http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Induced innovation and productivity-enhancing, resource-conserving technologies in Central America
the supply of soil conservation practices and small-scale farmers' adoption in Guatemala and El Salvador
Originally presented as the author's thesis (doctoral).
Includes bibliographical references (pages 197-205).
Europäische Hochschulschriften. Bd. 3041