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ACROSS
1)  british nuclear physicist (____ in germany) honored for his contributions to quantum mechanics (1882-1970)
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)  a blow from a flat object (as an open hand)
4)  blatant or sensational promotion


DOWN
1)  a low woody perennial plant usually having several major stems
2)  a southeastern suburb of paris; site of an international airport serving paris
3)  gather, as of natural products
4)  the back side of the neck

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