2013AASHTO T 84-2013 Standard Method of Test for Specific Gravity and Absorption of Fine Aggregate
2010AASHTO T 84-2010 Standard Method of Test for Specific Gravity and Absorption of Fine Aggregate
2009DIN EN 14017:2009 Agricultural and forestry machinery - Solid fertilizer distributors - Safety; German version EN 14017:2005+A2:2009
2008AASHTO T 84-2008 Standard Method of Test for Specific Gravity and Absorption of Fine Aggregate
2006DIN EN 14017:2006 Agricultural and forestry machinery - Solid fertilizer distributors - Safety; German version EN 14017:2005
2000AASHTO T 84-2000 Standard Method of Test for Specific Gravity and Absorption of Fine Aggregate
1998DIN 11001-6:1998 Agricultural machines and tractors - Special technical safety requirements and testing - Part 6: Equipment for working the soil, sowing, crop treatment and fertilizing