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P. O. Kettunen

1932

  • Advances in materials science of woodAdvances in materials science of wood
  • Wood structure and propertiesWood structure and properties
  • 50 vuotta veronmaksajain puolesta50 vuotta veronmaksajain puolesta
  • MetallioppiMetallioppi
  • Plastic deformation and strain hardeningPlastic deformation and strain hardening