2
3
Article
4
5
6
by Cimatu, Frank
Published in Philippine Daily Inquirer (2000)
Article
7
by Lewis, Henry Trickey 1928-
Published 1991
Book
8
Published 1991
Book
9
Published in Bulletin Today (1981)
Article
10
Published 1977
Visual Material
11
12
by Tugade, T. Gabriel
Published 1976
Visual Material
14
15
by Nydegger, William Frank 1915-
Published 1966
Book
16