火山灰の介在が泥炭層の形成に及ぼす影響に就いて
The Influence of an Intervenient Volcanic Ashes on the Formation of Peat Deposits

Sinobu YAMADA
1942 Japanese Journal of Soil Science and Plant Nutrition  
doi:10.20710/dojo.16.10_439 fatcat:fss6fydd6bddvioiba22j6ldmq