Heumann, Gerhart W.
Magnetic control of industrial motors : part 3 direct-current motor controllers / by Gerhart W. Heumann - New York Wiley 1961 - xv, 295 p.
Includes index
255436
Control devices
621.317 / HEU
Magnetic control of industrial motors : part 3 direct-current motor controllers / by Gerhart W. Heumann - New York Wiley 1961 - xv, 295 p.
Includes index
255436
Control devices
621.317 / HEU