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3. DoD management for energy commodities and related services(1988). 2004. US Department of Defence Directive 4140.25.
4. Implementation of the single fuel concept. July 2002. NPC NATO Fuels and Lubricants Working Group AC/112.
5. Policy for carriage of CIVGAS/ULGAS (Petrol) in fleet units. 24 Jan 2006. ACOS (LOGS). D/FLEET/602/3.