Special projects series
Philippine Bureau of Mines
by Wilford S. Wright [and others]
Philippines (Republic) Bureau of Mines 1958 Special projects series no. 17-iron-nickel
Pt. 1 , Pt. 2
Available at 1 libraries
by Mariano Melendres, Jr.
Philippine Bureau of Mines 1957 Special projects series publication no. 12 . Coal
compiled and edited by Arthur R. Kinkel ... [et al.].
Philippine Bureau of Mines 1956 Special projects series publication no. 16 . Copper
pt. 1. Text , pt. 2. Plates , Pt. 2-1 , Pt. 2-2
Available at 2 libraries
by J. Marvin Weller, Jose F. Vergara
Philippine Bureau of Mines 1955 Special projects series no. 1 . Coal