Unpriced values: Decisions without market prices, by John A. Sinden and Albert C. Worrell. New York: Wiley-Interscience, 1979, 511 pp. Price: $44.95

Current issues in natural resource policy, edited by Paul R. Portney with the assistance of Ruth B. Haas. Washington DC: Resources for the Future, Inc., 1983, 300 pp. Price: $9.50

Francis, John G., (1983)

The politics of wilderness preservation, by Craig W. Allin. Westport, CT: Greenwood Press, 1982, 304 pp. Price: $27.50

Francis, John G., (1983)

Incentives for environmental protection, edited by Thomas C. Schelling. Cambridge, MA: The MIT Press, 1983, 355 pp. Price: $32.50

Francis, John G., (1983)