Subject
- Dwellings -- Insulation3
- Mosses -- Control3
- Roofs -- Maintenance and repair3
- Agricultural laborers -- Health and hygiene.1
- Agriculture -- Safety measures1
- Alfalfa -- Processing -- Machinery1
- Barley as feed1
- Capons and caponizing -- Economic aspects1
- Chickens -- Effect of light on1
- Chickens -- Feeding and feeds1
- Chicks -- Feeding and feeds1
- Douglas fir -- Grading -- Oregon1
- Douglas fir -- Harvesting -- Oregon1
- Douglas fir -- Harvesting -- Washington (State)1
- Eggs -- Production1
- Electric wiring, Interior -- Planning1
- Fans (Machinery)1
- Forage plants -- Processing -- Machinery1
- Incubators1
- Incubators -- Design and construction1