Control of the dutch elm disease in New York State /
Welch, D. S
Control of the dutch elm disease in New York State / by D. S. Welch and J. G. Matthysse - Ithaca, N. Y. : Cornell University - 14 p. - Cornell extensión bull; 932 .
202735
Olmo -- Enfermedades
Control of the dutch elm disease in New York State / by D. S. Welch and J. G. Matthysse - Ithaca, N. Y. : Cornell University - 14 p. - Cornell extensión bull; 932 .
202735
Olmo -- Enfermedades