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2. Incorporating externalities into productivity analysis;Archibald,1988
3. Output, input and productivity measurement in U.S. agriculture 1948–1979;Ball;American Journal of Agricultural Economics,1985
4. The economic theory of index numbers: empirical tests for volume indices of agricultural output;Boyle;Irish Journal of Agricultural Economics and Rural Sociology,1988
5. Effluent charges can work: the case of Dutch water quality policy;Bressers,1988