U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
The thickness and density of a leaf or the weight per unit of surface. (See Elements of Quality, § 29.3586.)
Regulations most recently checked for updates: Aug 27, 2025
The thickness and density of a leaf or the weight per unit of surface. (See Elements of Quality, § 29.3586.)