%0 Journal Article %A Perkins, F. T. %T A Ready Reckoner for the Calculation of Geometric Mean Antibody Titres %D 1958 %J Microbiology, %V 19 %N 3 %P 540-541 %@ 1465-2080 %R https://doi.org/10.1099/00221287-19-3-540 %I Microbiology Society, %X %U https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-19-3-540