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ASTM D 1865 - 89 ; ASTM D 1865 - 89 (Reapproved 2002) Standard test method for hardness of mineral aggregate used on built up roofs
1) 1997 Annual book of ASTM Standards Section 4, Volume 04.04 Roofing, waterproofing, and bituminous materials 2) 2005 Annual Book of ASTM Standards Section 4 Construction, Vol. 04.04 Roofing and Waterproofing
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