The mean value theorem for functions of two variables

by Tortal, Grace R., Esmane, Annabelle R.
Published 1983

Wonder healers of the Philippines: Interviews with a herbalist, a spiritist and a faith healer

by Lahoz, Esperanza, Tortal, Grace R., Cuadra, Christopher, Pasis, Gerard
Published 1980

Victorio Edades: Father of modern art in the Philippines (painting)

by Mayo, Maria Gianina, Cuadra, Christopher, Lahoz, Esperanza, Reyes, Anthony, Tortal, Grace R., Pacis, Gerard
Published 1980