McLeod, Donald Angus.2009-03-202009-03-2019851985Source: Masters Abstracts International, Volume: 40-07, page: .9780315217072http://hdl.handle.net/10393/4791http://dx.doi.org/10.20381/ruor-14034Engineering, General.Comparison of the RNA genomes of persistent and parental strains of human coronavirus 229E.Thesis