Repairing Radio 6 Television 6 Furniture 5 Amateurs' manuals 4 Receivers and reception 4 Bookbinding 3 Books 3 Conservation and restoration 3 Furniture finishing 3 Leather bindings (Bookbinding) 3 Handbooks, manuals, etc 2 Magnetic recorders and recording 2 Maintenance and repair 2 Buildings 1 Color television 1 Composite materials 1 Concrete 1 Dwellings 1 Electric circuits 1 Epoxy resins 1 Equipment and supplies 1 Field work 1 Home repairing 1 IBM compatible computers 1 IBM microcomputers 1 Irrigation canals and flumes 1 Leather 1 Leatherwork 1 Maintenance 1