Ecology of arable land : perspectives and challenges proceedings of an International Symposium, 9-12 June 1987 Swedish University of Agricultural Sciences, uppsala, Sweden - Clarholm, Marianne; Bergstrom, L. (Dordrecht : Kluwer Academic Publishers, 1989)
Includes biblographical references
Keywords: Agricultural ecology -- Congresses; Soil ecology -- Congresses; Plant -- soil relationshipv Congresses