State system for ensuring the uniformity of measurements. Standard reference data. Orthohydrogen, liquid and gaseous. Density, enthalpy, entropy, isochoric, isobaric heat capacities and speed of sound at temperatures from 15 K up to 1000 K and pressures up to 100 MPa
Automobile roads of general use. Flexible pavement Indexes of deformation of structural layers of loose materials and soils. Technical requirements and method of determination
