Bos, Luito. <br/><br/>
Symptoms of virus diseases in plants :  with indexes of names of symptoms in English, Dutch, German, French, Italian, and Spanish. 

 - 2nd ed. rev. 
 - Wageningen :  Centre for Agricultural Pub. & Documentation,  1970. 
<br/><br/>Bibliography: p. 141-163. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Virus diseases of plants.