000			00263nam a22001097a 4500
082			_a624.1517 _bNAT
100			_aN.R.C
245			_aHighway Research Board Bulletin no. 46 _cN.R.C
260			_aWashington 25, D.C _cc1951.
300			_ap 95 _bill. _c25 cm
942			_cBK
999			_c7001 _d7001