Air program rules, regulations, and requirements
By: Colorado Department of Revenue.
Publisher: The Department
Published: 1989
Place of publication: [Denver, Colo.]
Language: eng
Number of pages: 38
Subjects: Automobiles -- Motors -- Exhaust gas -- Law and legislation -- Colorado.; Automobiles -- Pollution control devices -- Law and legislation -- Colorado.; Air -- Pollution -- Law and legislation -- Colorado.
Notes: "Effective December 1, 1989."