About SEMENIUK P
About Science and Education Administration U.S. Dep. Agriculture, Maryland
About STEWART R N
About Science and Education Administration U.S. Dep. Agriculture, Maryland
About Environmental and Experimental Botany
About bacterial infection(phenomenon)
About Diplocarpon rosae
About Influence on microorganisms
About Influence on plants
About Plant diseases caused by bacteria
About バラ
About 黒はん病
About 細菌
About 感染
About 紫外線照射