Situmorang, Alboin Oloan Binsar <br/><br/>
A study of the tasks performed and competencies needed by public high school principals of North Sumatra Indonesia with the implications for the improvement of programs for preparing principals  [microform] / 
Alboin Oloan Binsar Situmorang 
 - Ann Arbor, Mich. :  University Microfilms International,  1970 
 - 1 mikrofilem reel :  positive ;  35 mm. 
<br/><br/>Thesis (Ed.D.) - State University of New York at Albany, 1970 
<br/><br/><label>Subjects--Topical Terms: </label><br/>School management and organization--Indonesia<br/>High School principals--North Sumatra (Province)<br/>High school--Indonesia--North Sumatra (Province)