Guidelines for evaluating fluorescent strong yellow green crossing signs. Final report.

Federal Highway Administration, Washington, D.C.

Minimum retroreflectivity requirements for traffic signs: summary report.

Mode of access: Internet.

An evaluation of signs for sight-restricted rural intersections. Final report.

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

Signs and markings for low volume rural roads. Final report.

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

Occupational marks and other physical signs; a guide to personal identification.

Mode of access: Internet.

Safety features of stop signs at rail-highway grade crossings. Volume I. Executive summary. Final report.

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

Regulatory signs for lane occupancy and parking. Final report.

Mode of access: Internet.

A practical grammar of the English language : in which the principles established by Lindley Murray, are inculcated, and the theory of modes clearly illustrated by diagrams, representing the number of tenses in each mode, their signs and the manner in which they are formed /

Williamson,

Experimental design for evaluating the safety benefits of railroad advance warning signs /

Mode of access: Internet.

Phthisiologia : or, a treatise of consumptions. Wherein the difference, nature, causes, signs, and cure of all sorts of consumptions are explained. .Containing three books ... Illustrated by particular cases, and observations added to every book. With a compleat table of the most remarkable things /

Mode of access: Internet.

Abbreviations and signs, a primer of information about abbreviations and signs, with classified lists of those in most common use,

"Supplementary reading": p. 41.

A manual of phonography, or, Writing by sound : a natural method of writing by signs that represent the sounds of language, and adapted to the English language as a complete system of phonetic shorthand /

Mode of access: Internet.

Sigma signs.

Description based on: 1983-1984.

Automata by al-Jazari, The face of a water clock with Zodiac signs, folio from the Kitab fi ma'arifat al-hiyal al-handisaya (the book of knowledge of ingenious mechanical devices) Automata by al-Jazari

1 ft. 13/32 in.x 8 5/8 in.; ink, opaque watercolor and gold on paper

Policies for use of changeable message signs in highway work zones : final report /

Performing organization: Urban Transportation Center, University of Illinois at Chicago.