Proceedings of the 4th International Congress of Acarology, Saalfelden (Austria) 
edited by Eduard Piffl. 
 - Budapest  Akademiai Kiado  1979. 
 - 751 pages :    illustration ;    25 cm. 
<br/><br/><label>ISBN: </label>9630516950 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Acarology--Congresses