Related Clues:

• Robert Burns, for one
• Sierra Club concern: Abbr.
• E.P.A. concern: Abbr.
• Person whose name begins 'Mc-,' often
• Prefix with centric
• Storm producer
• Prefix with political or logical
• Prefix with political
• Sean Connery, for one
• Branch of sci.
• Prizm maker
• Person whose name starts with Mac-, maybe
• Prefix with physics
• Logical start?
• Northerner