Metal-work Congresses 22 Metallurgy 12 Metals 12 Machine-tools 8 Manufacturing processes 7 Mathematical models 7 Periodicals 7 Machine-shop practice 6 Deformations (Mechanics) 5 Materials 5 Handbooks, manuals, etc 4 Heat 4 Mechanical engineering 4 Production engineering 4 Transmission 4 Amateurs' manuals 3 Fluid dynamics 3 Iron industry and trade 3 Mass transfer 3 Metal trade 3 Metal-working machinery 3 Physical metallurgy 3 Plasticity 3 Cabinetwork 2 Dictionaries 2 Drawing 2 Equipment and supplies 2 Machining 2 Measuring instruments 2