Patrick, Robert H.Norquist, Suzanne M.2023-07-112023-07-111992http://hdl.handle.net/11124/177211Includes bibliographical references (pages 91-94).doctoral dissertationsengCopyright of the original work is retained by the author.Nonrenewable natural resources -- Cost controlMineral industries -- ResearchPetroleum industry and trade -- ResearchOptimal R & D for nonrenewable resources: the case of cost reducing technologyText