TY - JA AU - Yamada,I. AU - Shoji,S. TI - Soils formed from the andesitic and basaltic volcanic ashes, 2: Soil properties and fertility problems SN - No (Revis U1 - 76-111149 PY - 1975/// KW - Fertilizers KW - AGROVOC KW - Soil chemistry and physics KW - Volcanic areas KW - Soil fertility N1 - 19 ref.; Summary (En) T2 - Tohoku Journal of Agricultural Research ER -