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ACROSS
1)  a round shape formed by a series of concentric circles (as formed by leaves or flower petals)
2)  united states chemist who discovered deuterium (1893-1981)
3)  a person who is of equal standing with another in a group
4)  french soldier and writer whose descriptions of sexual perversion gave rise to the term `sadism' (1740-1814)


DOWN
1)  a small open container usually used for drinking; usually has a handle
2)  the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics
3)  tall woody perennial grasses with hollow slender stems especially of the genera arundo and phragmites
4)  a harp used by ancient greeks for accompaniment

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