Eleventh Congress on Irrigation and Drainage = Onzieme Congres des Irrigations et du Drainage / International Commission on Irrigation and Drainage, Transactions : Question 36 = Compte-rendu ; Vol. 2: [Improvement and modernization of existing irrigation and drainage systems]

International Commission on Irrigation and Drainage | TIBKAT | 1981

Eleventh Congress on Irrigation and Drainage = Onzieme Congres des Irrigations et du Drainage / International Commission on Irrigation and Drainage, Transactions : Question 36 = Compte-rendu ; Vol. 3: [Improvement and modernization of existing irrigation and drainage systems]

International Commission on Irrigation and Drainage | TIBKAT | 1981

Sixth congress on irrigation and drainage : transactions = Sixième congrès des irrigations et du drainage / International Commission on Irrigation and Drainage ; Vol. 1

International Congress on Irrigation and Drainage / International Commission on Irrigation and Drainage | TIBKAT | 1966

Fifth congress on irrigation and drainage : transactions = Cinquième congrès des irrigations et du drainage / International Commission on Irrigation and Drainage ; Vol. 1

Congress on Irrigation and Drainage / International Commission on Irrigation and Drainage | TIBKAT | 1963

Sixth congress on irrigation and drainage : transactions = Sixième congrès des irrigations et du drainage / International Commission on Irrigation and Drainage ; Vol. 4: Question 21

International Congress on Irrigation and Drainage / International Commission on Irrigation and Drainage | TIBKAT | 1966