Scientific and technical organizations and agencies directory. 

 - 1st. 
 - Detroit :  Gale Research Co,  1985. 
 - v ;  29 cm. 
<br/><br/> Closed. 
<br/><br/><label>LCCN: </label>86641378  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--United Sates--Societies, etc--Directories.<br/>Engineering--United States--Societies, etc--Directories.<br/>Technology--United States.--Societies, etc--Directories.