Participants to the FAO Regional Course on Weed Ecology and Competition. Bangkok, Thailand.
Practical session in Paddy Field Regional Course on Weed Ecology and Competition. Bangkok, Thailand.
Participants to the FAO Regional Course on Weed Ecology and competition for African Francophone countries. Cotonone, Benin.
Regional FAO Course on Weed Ecology & Interference. Amman,Jordan, September 2001
Participants at the FAO Regional Training course on Weed Ecology and Competition for English-Speaking African countries. Melkasa Research Centre, May 2001.