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Subclass QD
| QD1-999 | Chemistry | ||
| QD1-65 | General Including alchemy | ||
| QD71-142 | Analytical chemistry | ||
| QD146-197 | Inorganic chemistry | ||
| QD241-441 | Organic chemistry | ||
| QD415-436 | Biochemistry | ||
| QD450-801 | Physical and theoretical chemistry | ||
| QD625-655 | Radiation chemistry | ||
| QD701-731 | Photochemistry | ||
| QD901-999 | Crystallography | ||
