1
by Madelung, O., Lidiard, A. B., Stevels, J. M., Darmois, E.
Published 1957
Springer Berlin Heidelberg
Subjects: '; ...Electrical Engineering...

2
by Lange, H., Pütter, P. St
Published 1958
VS Verlag für Sozialwissenschaften
Subjects: '; ...Electrical Engineering...