Bos, L. <br/><br/>
Symptoms of virus diseases in plants :  with indexes of names in English, Dutch, German, French, Italian and Spanish / 
L. Bos 
 - New Delhi :  Oxford & IBH Pub.,  1970 
 - 205 p. ;  20 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Virus diseases of plants