Yazar
ronald g cummings
8 cilt bulundu.
Ronald G. Cummings · distributed by Johns Hopkins University Press
114 sayfa · 1974
Irrigation / Water resources development
Ronald G. Cummings · Rowman & Allanheld
270 sayfa · 1986
Public goods / Contingent valuation / Cost effectiveness / Valuation
Ronald G. Cummings · World Bank
48 sayfa · 1996
Mathematical models / Cost effectiveness / Water resources development
Ronald G. Cummings, James W. McFarland, Jose Trava, Mohamed El-Ashry · World Resources Inst
51 sayfa · 1989
Government policy / Irrigation farming / Water resources development / Agriculture and state / Food supply
Pierre R. Crosson, Ronald G. Cummings, Kenneth D. Frederick · Published for Resources for the Future by the Johns Hopkins University Press
190 sayfa · 1978
Management / Water-supply, Agricultural / Water resources development / Water-supply / Landwirtschaft
Ronald G. Cummings · New Mexico Energy Research and Development Program
261 sayfa · 1981
Economic aspects / Economic aspects of Radioactive waste disposal / Radioactive waste disposal / Social aspects / Social aspects of Radioactive waste disposal
Ronald G. Cummings · Resources for the Future; distributed by Johns Hopkins University Press, Baltimore
68 sayfa · 1972
Irrigation / Water resources development