EL HEFNI, G.M <br/><br/>
DIRECTORY OF SCIENTIFIC EQUIPMENTS /  
EL HEFNI, G.M 
 - [S.N] :   ACADEMY OF SCIENTIFIC RESEARCH AND TECHNOLOGY ،   1975 
 - 199 P 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SCIENCE<br/>SCIENCE - EQUIPMENTS<br/>SCIENCE - TESTING
<br/><br/><label>Dewey Class. No.: </label>681.75  / E D