Driver understanding of work zone flagger signals and signaling devices. Interim report.

Texas State Department of Highways and Public Transportation, Transportation Planning Division, Austin

The musical scale of the Arabs. Medieval organ pipes and their bearing on the history of the scale. The natural diatonic scale.

From the Proceedings of the American Association for the Advancement of Science, v. 48, 1899.

Propagation of temperate-zone fruit plants /

Mode of access: Internet.

Realisation of absolute scale of temperature.

Reprinted from vol.1 of "The dictionary of applied physics."

The scale of the universe, by Harlow Shapley ... and Heber D. Curtis.

Mode of access: Internet.

Visibility requirements of work zone traffic control devices. Final report.

Federal Highway Administration, Office of Research and Development, Washington, D.C.

Crash tests of construction zone traffic barriers. Second interim report.

Federal Highway Administration, Office of Research, Washington, D.C.

Union scale of wages and hours in the building trades in 70 cities: May 15, 1937/

Mode of access: Internet.

Construction costs and safety impacts of work zone traffic control strategies.

"December 1989."

Sulfuric acid digestion of leached zone /

Work performed at the International Minerals and Chemical Corporation under Contract AT(49-1)-545 with the U.S. Atomic Energy Commission.

Nitric acid digestion of leached zone /

"Contract No. AT(49-1)-538."

Scale of points for [cattle, sheep, swine]

Mode of access: Internet.

The role of conservation districts in the Coastal Zone Management Program : how districts have been involved, why they want to stay involved, what they can do about it /

Dec. 1979.