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Verma, S.K., Singh, R.K. & Singh, S.P. Copper toxicity and phosphate utilization in the cyanobacterium Nostoc calcicola . Bull. Environ. Contam. Toxicol. 50, 192–198 (1993). https://doi.org/10.1007/BF00191721
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DOI: https://doi.org/10.1007/BF00191721