Cotton, H. b. 1889.
Electrical principles. - London, Cleaver-Hume Press, 1956. - 382 p. illus. 20 cm.
57001174
GB56-9822
Electricity.
QC523 / .C589
Electrical principles. - London, Cleaver-Hume Press, 1956. - 382 p. illus. 20 cm.
57001174
GB56-9822
Electricity.
QC523 / .C589