Effective placement of detectors for computerized traffic control summary report. Final report.

Texas Department of Transportation, Austin

Detector location for computerized arterial street sampling detectors.

Texas Department of Transportation, Austin

A comparative study of various types of vehicle detectors. Final report.

Transportation Systems Center, Cambridge, Mass.

Leben Conrad Gessners von Zürich.

Plate is aquatint by F. Hegi after Gessner's "Die Pferd-Tränke." Headpiece port. of Gessner on p. [3] etched by H. Meyer.