000 00313nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a625.1 W3684
100 _aWEBB WALTER LORING
245 0 _aRAILROAD CONSTRUCTION THEORY AND PRACTICE
260 _aNEW YORK
_bWiley
_c1945
300 _a18X12
942 _cBK
_2DDC
999 _c12681
_d12681