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Economic Returns to Public Agricultural Research
关键词:
Agriculture
年份:
2007
摘要:
and consistent evidence that investment in agricultural resea ...
Agricultural Productivity in the United States
关键词:
inputs
年份:
1998
摘要:
in agricultural inputs of 0.06 percent per year. This report describes ...
Agricultural Resources and Environmental Indicators, 1996-97
关键词:
AREI natural resources farming practices land use water quality conservation
年份:
1997
摘要:
This report identifies trends in land, water, and commercial input< ...

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