Ayres, Robert U, Resources, environment, and economics : applications of the materials/energy balance principle / by Robert U. Ayres. - New York : Wiley, 1978. - 207pages ; 26 cm. 'A Wiley-Interscience publication.' Includes bibliographical references and index. ISBN: 0471026271 Subjects--Topical Terms: Econometrics.Economics--Mathematical models.