TY  - BOOK
AU  - Clarholm,Marianne
AU  - Bergstrom,L.
TI  - Ecology of arable land: perspectives and challenges proceedings of an International Symposium, 9-12 June 1987 Swedish University of Agricultural Sciences, uppsala, Sweden 
SN  - 0792304241
PY  - 1989///
CY  - Dordrecht
PB  - Kluwer Academic Publishers
KW  - Agricultural ecology
KW  - Congresses
KW  - Soil ecology
KW  - Plant
KW  - soil relationshipv Congresses
N1  - Includes biblographical references
ER  -