1. Methods in peat petrology and their application to reconstruction of paleo-environments;Cohen;Bull. Geol. Soc. Am.,1972
2. Phytogenic organic sediments and sedimentary environments in the Everglades-Mangrove complex: Part II. The origin, description and classification of the peats of southern Florida;Cohen;Palaeontographica B,1977
3. Cell wall polymers of higher plants in peat formation: the role of microorganisms;Exarchos,1977
4. Biochemical factors in coal formation;Flaig,1968
5. Biological aspects of the geochemistry of coal;Given,1972