Subject
- Dairy products--Packaging1
- Dance cards1
- Detergent industry1
- Detergents1
- Dinners and dining1
- Disinfection and disinfectants1
- Dwellings--Maintenance and repair1
- Electric batteries1
- Electric insulators and insulation--Varnish1
- Electric lines--Poles and towers1
- Ethylene dibromide1
- Exploration of outer space1
- Ferric chloride1
- Flavoring essences1
- Flotation reagents1
- Food industry and trade--Sanitation1
- Fruit--Packaging1
- Garden tools1
- Grocery trade1
- Helicopters1