Origins of pest, parasite, disease and weed problems   : the 18th. Symposium of the British Ecological Society, Bangor, 12-14 april, 1976  
/ Edited by J. M. Cherrett and G. R. Sagar 
 - Londres:  Blackwell Sc. Publications  , 1977 
 - 413 p.:  24 cm. 
<br/><br/><label>Subjects--Index Terms: </label>Microbiología Parasitología Bacteriología Malezas 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Congreso