PProcedures and formulas for metal craftsmenProcedures and formulas for metal craftsmende Harold O'ConnorMateriasHandbooks, manualsMetal-workEdiciones (1)Procedures and formulas for metal craftsmen (1976)Dunconor Books · inglésMás obras de Harold O'ConnorCCreative jewelry techniquesCreative jewelry techniquesFlexible Shaft Machine Jewelry TechniquesNNew directions in goldsmithingNew directions in goldsmithing