Welch, D. S <br/><br/>
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 .
<br/><br/><label>LCCN: </label>202735 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Olmo -- Enfermedades