000 002890000a22001210004500
245 1 0 _aABSTRECO
260 _bWageningen Agricultural University
041 0 _aEn
593 _a16-10-2001
590 _bDepartment of Ecological Agriculture 6709 RZ
_gNetherlans
942 _cCR
999 _c128601
_d128601