00577cas|a2200181 i 450000500170000000800410001702000150005803500150007310000250008824500640011326000570017730000100023449000220024465000270026665000160029365000160030981000700032520260818085110.0011203s1971    us  u m rtt  00|  a1eng d  a0309019109  a.b118409121 aCunningham, Roger A.10aControl of highway advertising signs :bsome legal problems  aWashington, D.C. :bNational Research Council,c1971  a72 p.1 aReport ;vno. 11910aHighway communications10aHighway law10aAdvertising2 aNational Cooperative Highway Research Program.tReport ;vno. 119