McDonald Bernard R Ed. Proceeding on ring theory McDonald Bernard R Ed.; Magid Andy R Ed.; Smith Kriaby Ed. - New York Marcel Dekker 1974 - xvi, 295p. cm. - Lecture notes in pure and applied mathematics; 7 . Standard No.: 88 Source: Textual Subjects--Topical Terms: Combinatorial theory Dewey Class. No.: B217p1,N73, L4