Media type: E-Article Title: Clay minerals and humus complexes in five Kenyan soils derived from volcanic ash—A discussion Contributor: Parfitt, R.L.; Churchman, G.J. imprint: Elsevier BV, 1988 Published in: Geoderma Language: English DOI: 10.1016/0016-7061(88)90012-2 ISSN: 0016-7061 Keywords: Soil Science Origination: Footnote: