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2. The structure and development of the peat swamps of Sarawak and Brunei;Anderson;J. Trop. Geogr.,1964
3. Comparison of ashing techniques for determination of the inorganic content of peats;Andrejko,1983
4. Lacustrine-interdeltaic coal in the Fort Union Formation (Paleocene), Powder River Basin, Wyoming and Montana, USA;Ayers,1984
5. The Nature and Properties of Soils;Brady,1996