Related Clues:

• Smoking and nonsmoking, e.g
• Gray __
• What's reduced hearing, for instance, including damaged otic parts
• General locations
• Length-times-width calculations
• Gray ones spark debate
• Calculations a high school math student might do
• Regions in China and Japan etc, off limits?
• Branches of enterprise making mathematical instruments
• Hospital rooms
• Geometric products
• Minor charges
• The tropics and others
• Fields of knowledge
• Public and private, e.g