TY - BOOK AU - Wallach,Paul Ross TI - Drafting SN - 0028296001 AV - T353T353 .W237 1981.W237 U1 - 604.2/4 19 PY - 1981/// CY - Encino, Calif. PB - Glencoe Pub. Co. KW - Mechanical drawing N1 - Includes index ER -