Djellal Faridah Measuring and improving productivity in services Issues,strategies and challenges Djellal Faridah; Gallouj Faiz - Cheltenham Edward Elgar 2008 - xiv,246p cm. - Services,economy and innovation . Standard No.: 54652 Source: Textual Subjects--Topical Terms: Service Industry World Dewey Class. No.: X9(Y):77.1'P, P8