TY  - BOOK
AU  - Pastor, Richard M.
TI  - Collaborative roles of Elementary School Heads: : their relationship to school performance
AV  - CD-02138t 
PY  - 2012///
CY  - Aparri, Cagayan
PB  - Lyceum of Aparri
KW  - Doctor of Philosophy
N1  - Educational Management
ER  -