000			00328nam a22001217a 4500
082			_a624.1517 _bNAT
100			_aN.R.C _942883
245			_aHighway Research Board Bulletin no. 46 _cN.R.C
260			_aWashington 25, D.C _cc1951.
300			_ap 95 _bill. _c25 cm
526			_a0 _b0 _c0 _d624_151700000000000_NAT
942			_2ddc _cBK
999			_c546705 _d546705