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Patnaik, H.K., Dash, M.C. Activity of gut enzymes in three tropical grassland earthworm species exposed to sub-lethal malathion suspension. Bull. Environ. Contam. Toxicol. 51, 780–786 (1993). https://doi.org/10.1007/BF00201658
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DOI: https://doi.org/10.1007/BF00201658