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Powdery dry-rot of the potato Texto completo
1918
Orton, W. A. (William Allen) | Link, George K. K. (George Konrad Karl) | Taylor, William A. (William Alton)
National Agricultural Library - United States of America
Control of the melon aphis Texto completo
1918
Chittenden, F. H. (Frank Hurlbut)
National Agricultural Library - United States of America
The control of tomato leaf-spot Texto completo
1918
Pritchard, Frederick John | Clark, W. B.
National Agricultural Library - United States of America