RT Journal Article SR Electronic(1) A1 Perkins, F. T.YR 1958 T1 A Ready Reckoner for the Calculation of Geometric Mean Antibody Titres JF Microbiology, VO 19 IS 3 SP 540 OP 541 DO https://doi.org/10.1099/00221287-19-3-540 PB Microbiology Society, SN 1465-2080, AB , UL https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-19-3-540