Dissertation abstracts international :  section B: the sciences and engineering. 

 - Michigan :  University Microfilms International,  1995. 
 - v ;  28 cm. 
 - Vol. 54-57 (1995-999); vol. 58 nos. 1-3 (1997); vol. 59 nos. 7-12 (1999);vol 60 nos. 1-6 (1999). 
<br/><br/> Closed. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Abstracts.<br/>Engineering--Abstracts.