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- Sulfur in lignite :form and transformations on thermal treatment
- Leonardite :a lignite byproduct
- Infrared spectra of hydroxy-aromatic organic compounds :(Supplement to R.I. 5505)
- An examination of a low-temperature tar from a North Dakota lignite
- Cell with four variable compartments for rapid infrared analysis
- Changes in ash composition of North Dakota lignite treated by ion exchange
- Coal-derived humus :plant growth effects