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Dust and ammonia in the air of a naturally ventilated broiler house
Bacteria and endotoxins in the air of a naturally ventilated broiler barn
Experience with different demonstration plants for an environmental compatible treatment
Comparison of different and new fattening pig husbandry systems with focus on environment
Potentials of C4-plant species as fuel crop and their environment impact
Recreational benefits of forests in Germany : methodological aspects and results of a contingent valuation study
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