1. The narrowing of NMR spectra of solids by high-speed specimen rotation and the resolution of chemical shift and spin multiplet structures for solids;Andrew,1971
2. Prospects for carbon-13 nuclear magnetic resonance analysis of solid fossil fuel materials;Bartuska;Fuel,1977
3. Relationships between chemical structure and technological behavior of coal;Berkowitz,1978
4. A tentative identification of average aromatic ring size in an Iowa vitrain and a Virginia vitrain;Gerstein;Am. Chem. Soc. Div. Fuel Chem., Prepr.,1979
5. Trace elements in coal: occurrence and distribution;Gluskoter;Ill. State Geol. Surv. Circ.,1977