GUID TO THE ECONOMIC EVALUATION OF IRRIGATION PROJECTS
BERGMANN, HELLMUTH. HELLMUTH, BERGMANN AND JEAN -MARC BOUSSARD.
GUID TO THE ECONOMIC EVALUATION OF IRRIGATION PROJECTS - 1ST - PARIS, ORGANISATION FOR ECONOMIC CO-OPERATION AND DEVELOPMENT: 1976.
9264114831
631 .1 BER
GUID TO THE ECONOMIC EVALUATION OF IRRIGATION PROJECTS - 1ST - PARIS, ORGANISATION FOR ECONOMIC CO-OPERATION AND DEVELOPMENT: 1976.
9264114831
631 .1 BER