At head of title: Republic of the Philippines, Department of Natural Resources, Bureau of Mines."MPN CR (2) 79-111"--Cover.11 maps on folded leaves in...
At head of title: Republic of the Philippines, Department of Natural Resources, Bureau of Mines."MPN CR (2) 79-111"--Cover.11 maps on folded leaves in case.Bibliography: leaves 9-12 (3rd group)