URI
Notation
539
Caption
Physical nature of matter
Broader class
53  Physics
Narrower classes
539.1Nuclear physics. Atomic physics. Molecular physics
539.2Properties and structure of molecular systems
539.3Elasticity. Deformation. Mechanics of elastic solids
539.4Strength. Resistance to stress
539.5Properties of materials affecting deformability
539.6Intermolecular forces
539.8Other physico-mechanical effects