000 00261nam a2200109Ia 4500
008 160710s1931 xx 000 0 und d
100 _aALLEN ,C.F.
245 _aRALLROAD CURVES AND EARTH WORK
260 _bMC GRAW HILL
_c1931
300 _a290
942 _2ddc
_cB
999 _c37989
_d37989