Fire blight of pears and related plants
Thomas, H.E., Ark, P.A.
Fire blight of pears and related plants - Berkeley 1934 - 1-43 p. - Plants California Agricultural Experiment Station. Bulletin No. 586 .
Fire blight of pears and related plants - Berkeley 1934 - 1-43 p. - Plants California Agricultural Experiment Station. Bulletin No. 586 .