00540nam a2200169 a 4500008004100000020001500041100001800056245013700074260004500211300002900256650002000285700002100305700001700326003000100343005001700344040000900361                                          a06731585431 aVahaly, John.10aStudy guide, Principles of macroeconomics /cJohn Vahaly, Jr. ; prepared to accompany the text by Roy J. Ruffin and Paul R. Gregory.  aGlenview, Ill. :bScott Foresman,c1983.  a194 p. :bill. ;c28 cm. 0aMacroeconomics.1 aGregory, Paul R.1 aRuffin, Roy.20230123133159.0  cNUST