xii, 284 pp. Clean and unmarked, with a large bump at bottom of spine, and progressive tilt to spine. Edited by Heinrich Schenker ; with a new introduction by Carl Schachter. ''An unabridged and corrected republication of L. van Beethoven / Klaviersonaten / Nach den autographen und Erstdrucken rekonstruiert von Heinrich Schenker . . . published . . . by Universal-Edition A. G., Vienna and Leipzig, ca. 1923"--verso of the title page.