TY - JOUR AU - Nourmohamadi, Gholamhossein AU - Shayanfar, Somayeh AU - Karimi, Gholamreza TI - Study of Germanium Content in Sangrood and Central Alborzʼs Coal and Feasibility Its Permutation JO - VL - 7 IS - 25 SP - 88 EP - 95 PY - 2013 DO - ER -