Plessis, Nicolaas Du. An introduction to potential theory / Nicolaas Du Plessis - Edinburgh : Oliver & Boyd, 1970 - viii, 177 p. ; 24 cm. - University mathematical monographs ; 7 . Includes bibliographical references and index ISBN: 0050020544 : 3.50 Subjects--Topical Terms: Potential theory (Mathematics)Harmonic analysis Dewey Class. No.: 517