00413nam a22001457a 4500 926 926 191231b ||||| |||| 00| 0 eng d 621.19 L6731 490 Lewis, G. E. H. Factory steam plant: a practical guide to fuel economy London Sir Isaac Pitman & Sons 1949 x,290p. 14.01 Steam Power Plants BK 0 0 ddc 0 621_190000000000000_L6731 0 3188 CL CL 1952-10-22 A. H. Wheeler 621.19 L6731 00535 2019-12-31 BK 0 0 ddc 0 621_190000000000000_L6731 0 3189 CL CL 1952-10-22 A. H. Wheeler 621.19 L6731 00536 2019-12-31 BK