Basiao, S. S., Nadurata, E. B., & Dela Peña, F. T. (1969). Production of elemental sulfur from surface ores. College of Engineering.
Chicago-viite (17. p.)Basiao, Samuel S., Edgardo B. Nadurata, ja Fortunato T. Dela Peña. Production of Elemental Sulfur from Surface Ores. Quezon City: College of Engineering, 1969.
MLA-viite (9. p.)Basiao, Samuel S., et al. Production of Elemental Sulfur from Surface Ores. College of Engineering, 1969.
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