Aquatic weeds in South East Asia : proceedings of a Regional Seminar on Noxious Aquatic Vegetation, New Delhi 12-17 December, 1973 - Regional Seminar on Noxious Aquatic Vegetation (1973 : New Delhi); Varshney, C. K. (The Hague : W. Junk B.V., 1976)
Keywords: Aquatic weeds -- Asia, Southeastern -- Congresses; Asia, Southeastern -- Aquatic weeds -- Congresses