Shepherd R.J., ea 1975
Shepherd R.J., Francki R. I. В., Birth L. et al. New groups of plant viruses approved by the international committee on taxonomy of viruses. September, 1975, Interviroiogy, 1975, v. 6, p. 181-184.
Shepherd R.J., Francki R. I. В., Birth L. et al. New groups of plant viruses approved by the international committee on taxonomy of viruses. September, 1975, Interviroiogy, 1975, v. 6, p. 181-184.
