1. Recent advances in polymer characterization by GPC;Ambler;Amer. Lab.,1979
2. Molar Mass Measurements in Polymer Science;Billingham,1977
3. Coal tar pitch: combined use of extraction chromatography and permeation chromatography;Blumer;Erdoel und Kohle, Erdgas, Petrochem.,1981
4. Molecular components of coal and coal structure;Bodzek;Fuel,1981
5. Geochemistry of Coal;Bouska,1981