Items where Year is 1993

Almeda, Fernando A (1993) Surigao Across the Years: Story of a Province. Philippine National Historical Society.

Sussman, David and Javellana, Samson P. and Benavidez, Pio J. (1993) Geothermal energy development in the Philippines: An overview. Geothermics, 22 (5). pp. 353-367.