00733nam a2200181 a 450000100080000000500110000800800410001910000160006024501580007626000720023430000190030649000120032550001410033765000110047865000210048965000270051065000140053710387912014-02-22       1993    bl uuuu     u00u1 u    #d1 aJONSSON, H.  aDynamics of rigid soil-engaging implements and parts of implementsblateral motion of soil-engaging implements and vertical motion of seed drill coulters  aUppsala (Suecia): Swedish University of Agricultural Sciencesc1993  a55p., pag.var.  aRapport  aIncluye artículos del autor presentados en publicaciones periódicas. - Tesis (Ph.D.) Swedish University of Agricultural Sciences, 1993  aARADOS  aMANEJO DEL SUELO  aMAQUINARIA DE LABRANZA  aTRACTORES