1  2  3  4

1  _  _  _  _

2  _  _  _  _

3  _  _  _  _

4  _  _  _  _


ACROSS
1)  people who are destined to die soon
2)  united states chemist who discovered deuterium (1893-1981)
3)  waterproofed canvas
4)  a river in central europe that arises in northwestern czechoslovakia and flows northward through germany to empty into the north sea


DOWN
1)  a substance for packing a joint or coating a porous surface to make it impervious to gas or liquid
2)  an examination conducted by spoken communication
3)  a member of a slavic people who settled in ____ia and neighboring areas in the 6th and 7th centuries
4)  a subdivision of a particular kind of thing

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