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bn:05145711n
Noun Named Entity
NL
No term available
DE
Der Gräfenberg-Ring war eines der ersten Intrauterinpessare, welches vom deutschen Mediziner Ernst Gräfenberg entwickelt wurde. Wikipedia
Relations
Sources
IS A
spiraal
DISCOVERER OR INVENTOR
Ernst Gräfenberg
MATERIAL USED
zilver
ijzerdraad
SHAPE
torus

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