Schwerdtfeger, Hans Introduction to linear algebra and the theory of matrices/ Hans Schwerdtfeger. - Groningen: P. Noordhoff, 1950. - 279 p.: 24 cm. Includes bibliographical references. LCCN: 51019162 //r86 Subjects--Topical Terms: Algebras, Linear.Matrices. Dewey Class. No.: 512.8