000 003190000a22001330004500
245 _aOperational economics of operational utilities
100 _aBary, C.W.
260 _aNew York
_bColumbia University Press
_c1963
300 _a221 p.
500 _adiagrs.
080 _a621.311
_bB3
041 _aEN
942 _cBK
999 _c94454
_d94454