Plonsey , Robert . Principles & Applications of Electromagnetic Fields / Textual Documents Robert Plonsey & Robert E. Collin. - 1st ed. / - New York : McGraw - Hill book company , 1961. - xvi, 554p. : ill. ; 24cm . Index Subjects--Index Terms: Physics Electromagnetism PG-Physics Dewey Class. No.: 539.81 / P 723 P