International inventory of software packages in the information field 
edited by Carl Keren, Irina Sered 
 - Paris  Unesco  1983 
 - 605p. 31cm. 
<br/><br/> At head ot t.p.: PGI-83/WS/28 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer programs--Catalogs<br/>Programming (Electronic computers)--Catalogs<br/>Programming languages (Electronic computers)--Catalogs