Meeting on the classification and correlation of soils from volcanic ash - Tokyo, Japan, 11-27 Jun 1964

andosol andosoles andosols ashes biologie du sol cendre ceniza chile chili classification classification des sols classification des terres el salvador eua extension activities filipinas hawaii indonesia japan japon korea republic land classification land suitability land use mineralogia mineralogie mineralogy new zealand nueva zelandia pedogenese philippines reclamation reconocimiento de suelos soil biology soil chemicophysical properties soil classification soil genesis soil morphological features soil profiles soil surveys sol volcanique south america trait morphologique du sol usa utilisation des terres volcanic soils