Principles of economics /
Ruffin, Roy J.
Principles of economics / by Roy J. Ruffin. - 4th ed. - Glenview, Illinos : Scott, Foresman, c1990. - xxxi, 851 p. : ill.
Notes on subject Index.
0673460207
Economics.
HB171.5 / .R82
Principles of economics / by Roy J. Ruffin. - 4th ed. - Glenview, Illinos : Scott, Foresman, c1990. - xxxi, 851 p. : ill.
Notes on subject Index.
0673460207
Economics.
HB171.5 / .R82