00557 a2200181 4500 9157652147 631.43 GRA 21781 34020 Grath, Thomas Effects of agricultural machinery traffic on pea growth ans penetration resistance in the subsoil Uppsala Swedish University of Agricultural Sciences 1996 1996 136p. 24cm Soil physics Specific techniques; apparatus, equipment, materials Soil science L 49223 49223 0 0 0 0 LEN MKDL MKDL LEN 2009-08-07 0 631.43GRA 52582 2009-08-07 00:00:00 0.00 2016-10-31 L