Text ( visual ) : unmediated
Structure of strong substitutes / Masatoshi Yamada. -- Toyonaka : Faculty of Economics and Osaka School of International Public Policy (OSIPP) Osaka University , 1996. -- 21 p. ; 21 cm. -- (Discussion papers in economics and business ; 96-05). -- Includes bibliographical references (p. 19). -- (BA34984968) ; https://ci.nii.ac.jp/ncid/BA34984968
Author Heading(s): 山田, 雅俊 
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