Potential means of cost reduction in grade crossing automatic gate systems. Volume I: overview and low cost railroad/highway grade crossing gate systems. Final report.

Transportation Systems Center, Cambridge, Mass.

Potential means of cost reduction in grade crossing automatic gate systems. Volume II: improved gate arm concepts for railroad/highway grade crossings. Final report.

Transportation Systems Center, Cambridge, Mass.

Railroad construction guide prices.

Oct. 1, 1945.

Van Nostrand's engineering magazine.

Title from caption.

Van Nostrand's engineering magazine.

Mode of access: Internet.

The Alaskan Engineering Commission : its history, activities, and organization /

Bibliography: p. 99-119.