1. The structure and development of the peat swamps of Sarawek and Brunei;Anderson;J. Trop. Geogr.,1964
2. Preparing coal samples for analysis, D-2013-86;ASTM,1992
3. Microscopical determination of volume percent of physical components of coal, D-2799-69T;ASTM,1992
4. Degradation of plant tissues in organic sediments;Barghoorn;J. Sediment. Petrol.,1952
5. The spontaneous ignition of wood and the origin of fusian;Bergstrom,1932