RS ASTM C311/C311M-22 STANDARD TEST METHODS FOR SAMPLING AND TESTING FLY ASH OR NATURAL POZZOLANS FOR USE IN PORTLAND-CEMENT CONCRETE
15,000.00
49
735,000.00
2
Rwanda Standards
RS ISO 18451-2: 2018 PIGMENTS, DYESTUFFS AND EXTENDERS — TERMINOLOGY — PART 2: CLASSIFICATION OF COLOURING MATERIALS ACCORDING TO COLOURISTIC AND CHEMICAL ASPECTS