J. NEUSNER, A History of the Mishnaic Law of Purities (Studies in Judaism in Late Antiquity VI), Part I. Kelim. Chapters One through Eleven, XXIV + 282 pp. Part II. Kelim. Chapters Twelve through Thirty, XI + 338 pp.; Part III. Kelim. Literary and Historical Problems, XVI + 415 pp., E. J. Brill, Leiden 1974, Parts I-III together, cloth f 280,-; Part IV. Ohalot. Commentary, XIV + 350 pp., E. J. Brill, Leiden 1974, cloth f 98,-; Part V. Ohalot. Literary and Historical Problems, XVI + 282 pp., E. J. Brill, Leiden 975, cloth f 82