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    by Punongbayan, Michael
    Published in Philippine Star (2016)
    Article
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  6. 6
    Published 2014
    Book
  7. 7
    Published 2010
    Book
  8. 8
    by Creswell, John W.
    Published 2007
    Book
  9. 9
    by Stake, Robert E.
    Published 2004
    Book
  10. 10
    by Shaw, Ian F.
    Published 1999
    Book
  11. 11
  12. 12
    by Selirio, Benedicto
    Published 1981
    Book
  13. 13
    Published 1978
    Book
  14. 14
    Published 1977
    Book
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  16. 16
  17. 17