Title: Ecology of leaf-surface micro-organisms; proceedings of an international symposium held at the University of Newcastle-upon-Tyne, September 1970
Subjects: Phytopathogenic microorganisms, Leaves, Congresses, Microbiology, Feuilles, Microbiologie, Congrès, Bactéries phytopathogènes, Bladeren, Micro-organismen, Plantenziekten, Leaves, anatomy