Whitney, Frederick Lamson The elements of research. - 3d ed. - New York Prentice-Hall 1950. - xvi, 539 p. diagrs. 22 cm. - Prentice-Hall education series . Includes bibliographies. LCCN: 50006653 Subjects--Topical Terms: Research LC Class. No.: LB1028 / .W48 1950 Dewey Class. No.: 370.78