TY  - BOOK
AU  - Situmorang,Alboin Oloan Binsar
TI  - 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
PY  - 1970///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - School management and organization
KW  - Indonesia
KW  - High School principals
KW  - North Sumatra (Province)
KW  - High school
N1  - Thesis (Ed.D.) - State University of New York at Albany, 1970
ER  -