ISIRI 8738, “Soil - Preserving and Transporting Soil Samples - Code of Practice”, First revision, 2018.
ISIRI 13939-5, “Aggregates –Tests for General Properties -Part 5: Common equipment and calibration”, First edition, 2018.
ISIRI 10447-6, “Aggregates - Tests for Geometrical Properties - Part 6: Assessment of surface characteristics, flow coefficient of aggregates, test method”, First edition, 2018.