Cowing Thomas G Ed. Productivity mcasurament in regulated industrics - New York Acadcmic Press 1981 - xv,417p Bib p 395-407 cm. - Economic Theory, Econometries, And Mathomational Economiics . Source: General Book Subjects--Topical Terms: Production Engeeniring Dewey Class. No.: X:89P:(B).73. N7, M1