Visual Quality Objectives in douglas-fir forests /

Shipping list no.: 92-0122-P.

Junkyards, the highway and visual quality : final report /

Mode of access: Internet.

Driver visibility quality: comparison of visibility quality meter data with human visual performance. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Effects of noise and hearing acuity upon visual depth perception and safety among humans /

Bibliography: p. 29-31.