Gmelin handbook of inorganic chemistry, system number 5 : Gmelin handbook of inorganic chemistry, system number 53 : Gmelin handbook of inorganic chemistry, system number 47 : Gmelin handbook of inorganic chemistry. system-number 13,. B, Boron. Gmelin handbook of inorganic chemistry, 8th edition. Gmelin handbook of inorganic chemistry. system-number 55,. U, Uranium. Gmelin handbook of inorganic chemistry. system-number 10,. Se, Selen. Gmelin handbook of inorganic chemistry. system-number 15,. Si, Silicon. Gmelin handbook of inorganic chemistry. system-number 54,. W, Tungsten. Gmelin handbook of inorganic chemistry. System number 54,. W, Tungsten.