Bull. D'analyses De Lift. Sci. Bulgare: Ling Et Litter: Nos. 1-2 

 - Sofia  Acad. Bulgare Des Sci.  1975 
<br/><br/><label>Subjects--Topical Terms: </label><br/>55922:N58
<br/><br/><label>Dewey Class. No.: </label>55922:N58  / 122J8.18.1