Lal , Brij . A Text Book of Electricity and Magnetism / Textual Documents Brij Lal & N.Subrahmanyam. - 7th ed. / - Agra : Ratna Prakashan Mandir , 1975. - 721p. ; 22cm. Subjects--Index Terms: Electricity and Magnetism Magnetism G-Physics Dewey Class. No.: 537 / L 15 T