Aitchison, Jean <br/><br/>
Unesco thesaurus : a structured list of  descriptors for indexing and retrieving  literature in the fields of education, science,  social science, culture and communication - Vol.  1 
<label>/ by </label> Aitchison, Jean 
 - Paris  Unesco  1977 
 - xvii, 485p.  30 cm. 
<br/><br/> Vol. 1 : Introduction, classified thesaurus,  permuted index, hierarchical display 
<br/><br/><label>Dewey Class. No.: </label>025.49  / AIT