Dissertation abstracts international. B. The Sciences and engineering. 

<br/><br/> Editorial varia: jul. 1969- ago. 1972 University Microfilms; sep. 1972-may. 1976, Xerox University Microfilms; jun. 1976- University Microfilms International 
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<br/><br/><label>ISSN: </label>0419-4217 
 = Dissertation abstracts international. B. The Sciences and engineering 
 = Diss. abstr. int., B, Sci. eng. 
<br/><br/><label>CODEN: </label>DABBBA 
<br/><br/><label>LC Class. No.: </label>Z5055 
<br/><br/><label>Dewey Class. No.: </label>011.7