A study of state programs for rail-highway grade crossing improvements. Final report.

Federal Railroad Administration, Office of Policy and Program Development, Washington, D.C.

Innovative concepts and technology for railroad-highway grade crossing motorist warning systems. Vol. I: overview and concept generation and analysis. Final report.

Transportation Systems Center, Cambridge, Mass.

Innovative concepts and technology for railroad-highway grade crossing motorist warning systems. Vol. II: the generation and analysis of alternative concepts. Final report.

Transportation Systems Center, Cambridge, Mass.

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.

Potential means of cost reduction in grade crossings motorist-warning control equipment. Volume I: overview, technology survey and relay alternatives. Final report.

Transportation Systems Center, Cambridge, Mass.

An analysis of expected delay reduction by replacing a congested at-grade intersection with an interchange.

Texas Department of Transportation, Austin

Definition and use of the phi grade scale /

"November 1979."

Physical beneficiation of low-grade uranium ores,

"July 30, 1958."

Alignment and grade of culverts. Part I. Determination of required size, alignment and grade of culverts.

Mode of access: Internet.

Lower-grade English, grammar, analysis, punctuation, paraphrasing, derivation...

Mode of access: Internet.

Harvey's English grammar. A practical grammar of the English language, for the use of every grade.

Mode of access: Internet.

Sanders' high school reader : embracing a comprehensive course of instruction in the principles of rhetorical reading with a choice collection of exercises in reading both in prose and poetry : for the use of the higher classes in schools of every grade /

Mode of access: Internet.

The natural reader : a revolution in the art of reading : designed for old and young, at home and at school, adapted to suit every grade of instruction, especially helpful to public speakers and readers : embodying a most important discovery in the art of expression /

Mode of access: Internet.

An anatomical-histological and experimental-biological study of Thorictus foreli Wasm.

From Contributions to myrmecophily, no. 1.

Recent high grade uraniferous lignite discoveries in Harding County, South Dakota /

"January 1955."