Search Results       Your search for [subject]Soil productivity -- Congresses returned 1 record.           Priorities for alleviating soil-related constraint to food production in the tropics. Los Banos, Laguna: IRRI, 1980. Subject: Crops and soils -- Congresses; Agricultural productivity -- Congresses; Soil productivity -- Congresses; Soils and nutrition -- Congresses.          Add to Book Cart Relevance: 17.92%