Nordas, Hildegunn Kyvik Oil-related producer services and productivity - the case of Norway / Hildegunn Kyvik Nordas - Bergen : CMI , 2000 - 30p. : ill. ; 30 cm. - CMI Working Papers No. 2000: 6 . Includes bibliographical references and index. Subjects--Topical Terms: ProducersPetroleum industryProductivity Gov. Doc. Class. No.: NO CMI DSHR WP-2000/6