Proceedings of the 30th International Geological Congress by International Geological Congress., 30, 1996, Beijing, Yang, Qi 0 Type: Book
Geology of fossil fuels: Beijing, China, 4-14 August 1996 by International Geological Congress., 30, 1996, Beijing, Yang, Qi fromProceedings of the 30th International Geological Congress 0 Type: Book
Geology of fossil fuels - coal: proceedings of the 30th International Geological … by Yang, Qi, Congrès géologique international, Pékin) fromProceedings of the 30th International Geological Congress 0 Type: Book
Coal by International Geological Congress, Beijing), Yang, Qi, International Geological Congress, Peking fromProceedings of the 30th International Geological Congress 0 Type: Book
Proceedings of the 30th International Geological Congress, Beijing, China, 4-14 August 1996: coal by International Geological Congress, Beijing, China), Yang, Qi fromProceedings of the 30th International Geological Congress 0 Type: Book
