Electrical engineers' handbook, electric power. Editors: William A. Del Mar & Harold Pender. 4th ed.
R681358. Electrical engineers' handbook, electric power. Editors: William A. Del Mar & Harold Pender. 4th ed. © 6Oct49; A36898. John L. Del Mar, Emily D. Muller & Eleanor D. Revill (C); 26May77; R681358.
John L. Del Mar, Emily D. Muller & Eleanor D. Revill|C