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  1. Gravel Roads: Maintenance and Design Manual | US EPA

  2. Typical Road Cross Section – Gravel Driveway

  3. (PDF) DESIGN OF GRAVEL ROADS - ResearchGate

  4. Gravel roads : maintenance and design manual - Bureau of …

  5. 1.1 General: VOLUME III, Pavement Design Manual Part 3: Gravel Road ...