Measuring water quality benefits,by V. Kerry Smith and William H. Devousages. Boston,MA: Kluwer Nijhoff Publishing, 1986, 327pp. Price $47.50 cloth. Valuing wildlife: Economic and social perspectives,edited by Daniel J. Decker and Gary R. Goff. Boulder,CO: Westview Press, 1987, 424pp. Price $35.00 cloth |