1. Factor analysis and numerical taxonomy of soils;Arkley,1971
2. Particle fractionation and particle-size analysis;Day,1965
3. Reassessing the use of loss-on-ignition for estimating organic matter content in noncalcareous soils;Goldin;Commun. Soil Sci. Plant Anal.,1987
4. Effect of sample pretreatment on extractable soil potassium;Haby;Commun. Soil Sci. Plant Anal.,1988
5. Estudio de los suelos de la depresión Guadix-Baza (Granada). II; Análisis de factores en modo R.;Iriarte Mayo;Anal. Edafol. Agrobiol.,1988