Finding articles
TJ1-TJ1570 Mechanical engineering and machinery
TJ163 - 165 Power, Energy
TJ170-173 Mechanics applied to machinery. Dynamics
TJ212-225 Control engineering systems
TJ227-240 Machine design and drawing
TJ254.5-.7 Combustion engineering
TJ255-265 Heat engines
TJ266-267.5 Turbines. Turbomachines (General)
TJ268-567 Steam engineering
TJ603-695 Locomotives
TJ807-830 Renewable energy sources
TJ836-935 Hydraulic machinery