TY - CONF ID - orgprints7930 UR - http://orgprints.org/7930/ A1 - Rasmussen, Ilse A. TI - Perennial weeds in a crop rotation perspective Y1 - 2006/// N2 - Biology of perennial weeds, prevention, control and management in organic crop rotations. AV - public KW - perennial weeds KW - crop rotation KW - biology KW - prevention KW - control KW - management KW - ER -