Ozonium root rot
Peltier, G.L., King, C.J., Samson, R.W.
Ozonium root rot - Washington 1926 - 1-25 p. - United States Department of Agriculture. Department Bulletin No. 1417 .
Ozonium root rot - Washington 1926 - 1-25 p. - United States Department of Agriculture. Department Bulletin No. 1417 .