TY - BOOK AU - Welch,William W. TI - Strategies for put and call option trading SN - 0876268262 (pbk.) AV - HG6042 .W44 1982 U1 - 332.64/52 20 PY - 1982/// CY - Cambridge, Mass. PB - Winthrop Publishers KW - Options (Finance) KW - Local N1 - Errata slip inserted; Includes index; Bibliography: p. 196-197 ER -