Nitrogen Turnover in the Soil-Crop System: Modelling of Biological Transformations, Transport of Nitrogen and Nitrogen Use Efficiency. Proceedings of a Workshop help at the Institute for Soil Fertility Research, Haren, The Netherlands, 5–6 June 1990

Soil Water and Nitrogen in Mediterranean-type Environments

Toxic Organic Chemicals in Porous Media

Nitrogen Economy in Tropical Soils: Proceedings of the International Symposium on Nitrogen Economy in Tropical Soils, held in Trinidad, W.I., January 9–14, 1994

Biological Nitrogen Fixation Associated with Rice Production: Based on selected papers presented in the International Symposium on Biological Nitrogen Fixation Associated with Rice, Dhaka, Bangladesh, 28 November– 2 December, 1994

Modern Agriculture and the Environment: Proceedings of an International Conference, held in Rehovot, Israel, 2–6 October 1994, under the auspices of the Faculty of Agriculture, the Hebrew University of Jerusalem

Current Issues in Symbiotic Nitrogen Fixation: Proceedings of the 5th North American Symbiotic Nitrogen Fixation Conference, held at North Carolina,USA, August 13-17, 1995

Plant Roots - From Cells to Systems: Proceedings of the 14th Long Ashton International Symposium Plant Roots — From Cells to Systems, held in Bristol, U.K., 13–15 September 1995