Valsts valodas centra izstrādātie transporta, infrastruktūras un sakaru termini

Konteksts: [..] Under the direct billing system, the CN 51 accounts shall serve as a bill for direct settlement and shall be sent to the debtor designated operator no later than five months after the end of the period to which they refer. The acceptance period for the CN 51 account shall be two months. [..]
Avots: Amendments to the Regulations to the Convention (UPU)