Awdur
Agrochimica
1
Congress on Irrigation and Drainage Casablanca, Morocco
1
Deutsche Gesellschaft für Technische Zusammenarbeit
1
Food and Agriculture Organization of the United Nations
1
International Atomic Energy Agency
1
International Commission on Irrigation and Drainage
1
International Congress in Vitreous Enamelling Paris
1
International Enamellers Institute
1
International Statistical Institute
1
International Veterinary Congress
1
Pan-American Medical Congress Washington, D.C.
1
Symposium on Soil Organic Matter Studies Braunschweig, Germany
1
Tunisia. Wizārat al-Filāḥah
1
World Fertility Survey
1
World Fertility Survey. Conference
1
World Veterinary Congress New York
1