Specialized science information services in the United States ; a directory... 

 - Washington :  Office of Science Information Service,  1961 
 - 528 p. 
 - NSF 61-68 .
 - NSF 61-68 .
<br/><br/><label>LCCN: </label>30854 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biología--Sociedades--Directorios.<br/>Física--Sociedades.<br/>Instituciones científicas.
<br/><br/><label>Dewey Class. No.: </label>506  / N38