Natural products and the protection of plants  proceedings of a study week at the Pontifical Academy of Sciences, October 18-23, 1976 
edited by G.B. Marini-Bettolo 
 - Amsterdam  Elsevier Science  1977 
 - 846 p. : ill. ; 25 cm. 
 - Pontificiae Academiae scientiarum scripta varia  41 .
<br/><br/> Added t.p.: Semaine d'etude sur le theme produits naturels et la protection des plantes, 18-23 Octobre 1976 
<br/><br/><label>ISBN: </label>044441620X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants, Protection of--Congresses<br/>National products--Congresses<br/>Organic farming--Congresses