Manual of assessment keys for plant diseases
James, Clive
Manual of assessment keys for plant diseases Clive James - Minnesota American Phylopathological Society 1971 - varies p.; 18cm. - (Canada department of agriculture publication; no.1458) .
581.202 J237M
Manual of assessment keys for plant diseases Clive James - Minnesota American Phylopathological Society 1971 - varies p.; 18cm. - (Canada department of agriculture publication; no.1458) .
581.202 J237M