Barro, Stephen M. <br/><br/>
An econometric study of public school expenditure variations across states, 1951-1967 / 
Stephen M. Barro 
 - California :  Rand Corporation,  1972 
 - 21 pages ;  28 cm. 
 - The Rand paper series ;  p. 4934 .
 - Rand paper series ;  p. 4934 .
<br/><br/>Includes bibliographical references.