Electric time-switch for closing circuits at accurately regular intervals /

Includes bibliographical references.

A study of clearance intervals, flashing operation, and left-turn phasing at traffic signals. Volume 1: sumary report. Final report.

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

A study of clearance intervals, flashing operation, and left-turn phasing at traffic signals. Volume 2: clearance intervals. Final report.

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

A study of clearance intervals, flashing operation, and left-turn phasing at traffic signals. Volume 3: flashing operation. Final report.

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

Tables of compound interest and annuities; 48 rates, proceeding by intervals of one-sixteenth per cent. for from 1 to 120 years or periods and carried to nine decimal places ... With miscellaneous tables appended.

Mode of access: Internet.

Twenty years on the trap line : being a collection of revised camp notes written at intervals during a twenty years experience in trapping, wolfing and hunting, on the great Northwestern plains /

Mode of access: Internet.

Overlapping group identification in an industrial setting /

Presented at the meetings of the American Psychological Association at Denver, Colorado, September 1949.