00673cas|a2200169 i 450000500170000000800410001703500150005810000200007324500440009326001090013730000090024649000220025550000620027765000300033965000320036981001020040120260817170913.0030806s1952    us  uzm rtt  00|  a1eng d  a.b1189197x1 aGerlough, D. L.10aAutomatic computers for traffic control  aBerkeley, Calif. :bInstitute of Transportation and Traffic Engineering, University of California,c1950  a4 p.1 aReprint ;vno. 16  aReprinted from Municipal Signal Engineer, July-Aug., 1952 0aTraffic signs and signals 0aElectronic traffic controls1 aCalifornia.bUniversity.bInstitute of Transportation and Traffic Engineering.tReprint ;vno. 16