DIN 19683-13:1997
农业水利工程土壤调查方法.实验室物理试验.第13部分:矿物质土壤的密度、总孔隙容积和气隙率测定
Methods of soil investigations for agricultural water engineering - Physical laboratory tests - Part 13: Determination of soil density, total pore volume and porenumber of mineral soils