00310nam a2200097Ia 4500008004100000082002100041100003100062245003900093260007300132300000700205140113s9999    xx            000 0 und d  a631.43(084)   L0  a"Oyama, M. & Takehara, H."  aRevised Standard Soil color charts  a1970b"Research Council fo Agriculture, Forestry & fisheries"cJapan  a80