TY - BOOK ED - United States. ED - U.S. Dept. of Commerce, International Trade Administration, TI - Sources of information on U.S. firms: a guide for international traders U1 - 338.7025 23 PY - 1981/// CY - Washington, D.C. PB - U.S. Dept. of Commerce, International Trade Administration KW - Business enterprises KW - United States KW - Directories KW - Business information services ER -