TY - BOOK TI - Economics / Ralph T. Byrns, Gerald W. Stone. AU - Byrns, Ralph T. A2 - Stone, Gerald W. CY - Glenview, Ill. ; London PB - Scott, Foresman PY - 1989 LA - English SN - 0673381943 ET - 4th ed. N1 - Previous ed.: 1987 ER -