Preer J.R. et al. 1974
Preer J.R., Jr., Preer L.B., and Jurand A. 1974. Kappa and other endosymbionts in Paramecium aurelia. Bacterial. Rev. 38: 113-163.
Preer J.R., Jr., Preer L.B., and Jurand A. 1974. Kappa and other endosymbionts in Paramecium aurelia. Bacterial. Rev. 38: 113-163.
