Book Chapter
“Rural Development And The Careful Utilization Of Natural Resources In The Peruvian Sierra”. In Report On The Workshop-Seminar Held In Achoma (Arequipa), Peru, 31 March To 9 April 1987. Berlin, Germany: Deutsche Stiftung für Internationale Entwicklung (German Foundation for International Development). http://www.worldcat.org/oclc/243201934.
. 1989.