Text ( visual ) : unmediated Biotechnology and the patent system : balancing innovation and property rights / Claude Barfield and John E. Calfee. -- : pbk. -- Washingon, D.C. : Published for the American Enterprise Institute [by] AEI Press , c2007. -- ix, 117 p. ; 23 cm. -- Includes bibliographical references (p. 101-116). -- ISBN 9780844742564 ; (BB15113078) ; https://ci.nii.ac.jp/ncid/BB15113078 Author Heading(s): Barfield, Claude E. ; Calfee, John E.. -- Classification(s): LCC : KF3133.B56 ; DC22 : 346.7304/86. -- Subject Heading(s): LCSH : Biotechnology -- United States -- Patents ; LCSH : Patent laws and legislation -- United States