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ASTM D 2168 - 90 (reapproved 1996) ; ASTM D 2168 - 02a Standard test methods for calibration of laboratory mechanical rammer soil compactors
1) 1997 Annual Book of ASTM Standards. Section 4 Construction, Volume 04.08 Soil and Rock (I) 2) Annual Book Of Astm Standards 2006 Soils And Rock (i) Vol. 04.08
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