World summary of statistics on science and technology :  results of experimental surveys of scientific and technical manpower and expenditures for research and experimental development. 

 - Paris :  UNESCO,  1970. 
 - 66 p. ; 
<br/><br/><label>ISBN: </label>1810 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Dewey Class. No.: </label>507.24  / Wo