Éditeur(s) :
s.n. s.n. ( Wageningen ) Résumé : (Thesis) Thesis (doctoral)--Wageningen Universiteit, 2002.
(Bibliography) Includes bibliographical references (p. 237-253).
(Language) Summary in Dutch and Spanish.
(Statement of Responsibility) Rebecca A. Lee.
"Propositions" inserted.
Colombia
Colombia
Colombia
51177902
9058087492