Reference materials for collaborative tests of air quality methods /
Richard H. Johns and John K. Taylor.

APA Citation

Johns, R. H., Taylor, J. K. (John Keenan). (1974). Reference materials for collaborative tests of air quality methods. Washington: U.S. National Bureau of Standards .

MLA Citation

Johns, Richard H, and John K. (John Keenan) Taylor. Reference Materials for Collaborative Tests of Air Quality Methods. Washington: U.S. National Bureau of Standards , 1974.