Differential equations from the algebraic standpoint / Joseph Fels Ritt. Ritt, Joseph Fels, 1893-1951. Differential equations. QA371 .R45 517.3 RID Includes bibliographical references and index. New York : American mathematical society, 1932. 1932. 1932 Text x, 172 p. ; eng American Mathematical Society. Colloquium publications ; Vol. XIV Colloquium publications (American Mathematical Society) ; v. 14.