TY  - BOOK
AU  - Wagner, F.A.
AU  - Gerlough, D.L., coaut.
ED  - E.U.A. National Research Council. Highway Research Board.
TI  - Improved criteria for traffic signal systems on urban arter-ials / F.A. Wagner , D.L. Gerlough
CY  - Washington, D.C. : HRB
ER  -