000 00271nam a2200109Ia 4500
008 220204s9999 xx 000 0 und d
082 _a027.43958
_bRIG
100 _aRiggs, James L
245 0 _aEngineering economics
260 _aNew York
_bMcGraw Hill
_c1977
942 _cBK
999 _c27755
_d27755