Fire blight and its eradication
Jones, D.H.
Fire blight and its eradication - Ridgetown 1929 - 1-22 p. - Blight, Eradication Ontario Agricultural Experiment Station. Bulletin No. 342 .
Fire blight and its eradication - Ridgetown 1929 - 1-22 p. - Blight, Eradication Ontario Agricultural Experiment Station. Bulletin No. 342 .