00902nam a2200265 a 4500001000700000003000500007005001700012008004100029010001700070020003100087038001200118040001800130050002500148082001500173100004500188245004500233260009000278300002800368490009800396500002100494504004100515650001900556650002000575830004100595900660NUST20190926110214.0820811s1981    dcua     b    000 0 eng    a   81085775   z0309033105 (pbk.) :c$7.20  aMSOHAIL  aDLCcDLCdDLC00aTD893.6.T7bC63 198100a363.742191 aCohn, Louis F.q(Louis Franklin),d1948-10aHighway Noise Barriers /cLouis F. Cohn.  aWashington, D.C. :bTransportation Research Board, National Research Council,c[1981]  a81 p. :bill. ;c28 cm.1 aNational Cooperative Highway Research Program synthesis of highway practice,x0547-5570 ;v87  a"December 1981."  aIncludes bibliographical references. 0aTraffic noise. 0aNoise barriers. 0aSynthesis of highway practice ;v87.