1
3
4
by Sanchez, Fernando B.
Published in Liwayway (2016)
Article
5
by Valenzuela, Reni M.
Published in Philippine Panorama (2014)
Article
6
7
9
10
by Isaac, Norman B.
Published in Manila Bulletin (2012)
Article
11
Published in Manila Bulletin (2012)
Article
12
13
14
Book
15
by White, Ellen G. 1827-1915.
Published 2010
Book
17
by Heaster, Duncan
Published 2009
Book
19
by Townend, W.A.
Published in Health & Home (2009)
Article
20