Steam meters
Siemens Venturi steam meter
Steam meters - - n.p. : Siemens Venturi Steam Meter, n.d. - 64 p. 19 cm - .
0
621.317.7 Sie
Steam meters - - n.p. : Siemens Venturi Steam Meter, n.d. - 64 p. 19 cm - .
0
621.317.7 Sie