Text ( visual ) : unmediated The market system : an introduction to microeconomics / Robert H. Haveman, Kenyon A. Knopf. -- 4th ed. -- New York : Wiley , c1981. -- xvii, 280 p. : ill. ; 23 cm. -- (Introduction to economic series). -- Includes bibliographical references and index. -- ISBN 0471085308 ; (BA28068842) ; https://ci.nii.ac.jp/ncid/BA28068842 Author Heading(s): Haveman, Robert H. ; Knopf, Kenyon A.. -- Classification(s): LCC : HB172 ; DC19 : 338.5. -- Subject Heading(s): LCSH : Microeconomics