American Petroleum Institute

American Petroleum Institute is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Laboratories Petroleum

North American Industry Classification System (NAICS) Categories:

• Research And Development In The Physical, Engineering, And Life Sciences > Natural Resource Research > Laboratories Petroleum

Standard Industry Classification (SIC) Categories:

• Commercial Physical & Biological Research > Laboratories Research & Development > Laboratories Petroleum