1
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2
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5
published 1918
Other Authors: '; ...Leffingwell, Ernest de Koven de K...
Volltext, NL
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7
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11
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12
by De�k, P.
Published in physica status solidi (b) (2000)
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18
19
by de K. Glover, R. A.
Published in BMJ (1967)
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20
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