Book Review Hematology: Thrombosis and Hemorrhage Edited by Joseph Loscalzo and Andrew I. Schafer. 1337 pp., illustrated. Boston, Blackwell Scientific, 1994. $225. 0-86542-263-X Hemostasis and Thrombosis: Basic Principles and Clinical Practice Edited by Robert W. Colman, Jack Hirsh, Victor J. Marder, and Edwin W. Salzman. 1713 pp., illustrated. Philadelphia, J.B. Lippincott, 1994. $195. 0-397-51059-4 The Hemorrhagic Disorders: A Clinical and Therapeutic Approach By Mario Stefanini and William Dameshek. 308 pp., illustrated. New York, Grune and Stratton, 1955. Out of print.