@article{mbs:/content/journal/ijsem/10.1099/00207713-20-2-230a, author = "", title = "An illustrated key to the British freshwater ciliated protozoa commonly found in activated sludge", journal= "International Journal of Systematic and Evolutionary Microbiology", year = "1970", volume = "20", number = "2", pages = "230-231", doi = "https://doi.org/10.1099/00207713-20-2-230a", url = "https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-20-2-230a", publisher = "Microbiology Society", issn = "1466-5034", type = "Journal Article", }