00311nam a2200085Ia 4500008004100000020001800041082001900059100004400078245010300122210430s9999    xx            000 0 und d  a90-5699-696-7  a662.623 K 22 C  aS. Komar Kawatra and Timothy C. Eisele   aCoal Desulfurization High- Efficiency Preparation MethodscS. Komar Kawatra and Timothy C. Eisele