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These terms define your current search. Click the × to remove a term. Natural Resources, Earth and Environmental Sciences: environmental science > environmental degradation > pollution > point source pollution × 88 items, grouped by Breeding and Genetic Improvement (view ungrouped items) genetic techniques and protocols (1)    (Click to View) Quantitative analyses of ammonia-oxidizing Archaea and bacteria in the sediments of four nitrogen-rich wetlands in China Applied microbiology and biotechnology.