na INLIS000000000000979 20240626112548 0010-0624000093 ta 240626 g 0 eng 0673165833 330.1 330.1 BYR e Byrns, Ralph T. Exploring Economics / Ralph T. Byrns & Gerald W. Stone United States : Scott, Foresman and Company., 1984 375 hlm. : ilus. ; 23 cm Ekonomi Stone, Gerald W. BUN01452