The theory of direct-current dynamos and motors,
Case, John. [from old catalog]
The theory of direct-current dynamos and motors, - Cambridge, W. Heffer & sons, ltd., 1921. - 2 p.l., vii-xiii, 196 p., 1 l. illus., 2 fold. pl., diagrs. 23 cm.
Electric generators--Direct current.
Electric motors, Direct current.
621.3132 / CAS
The theory of direct-current dynamos and motors, - Cambridge, W. Heffer & sons, ltd., 1921. - 2 p.l., vii-xiii, 196 p., 1 l. illus., 2 fold. pl., diagrs. 23 cm.
Electric generators--Direct current.
Electric motors, Direct current.
621.3132 / CAS