| More topics under "C01 - Inorganic chemistry" (318,385) |
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| C01B - Non-metallic elements; Compounds thereof (191,155) |
| C01C - Ammonia; Cyanogen; Compounds thereof (8,734) |
| C01D - Compounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium (11,216) |
| C01F - Compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals (30,135) |
| C01G - Compounds containing metals not covered by subclasses or (77,145) |