Wetland soils, characterization, classification, and utilization : proceedings of a workshop held 26 March to 5 April 1984 under the joint sponsorship of the International Rice Research Institute ; Soil Management Support Services, Agency for International Development and USDA ; Bureau of Soils, Philippine Ministry of Agriculture. International Rice Research Institute. United States. Philippines. Wetlands Soils Soils Soil structure 631 THE 1985 A040 Or. "The Workshop on Characterization, Classification and Utilization of Wetland Soils, held at the International Rice Research Institute (IRRI) 26 March-5 April 1984 ..."--Foreword. Manila, Philippines : The Institute, 1985. 1985. Text 559 p. :