Date of Birth: 
Place of Birth: Diemelsee, Germany
About Hartmut Walravens
- Hartmut Walravens (born 1944) is a German librarian.
- He was the director of the International ISBN Agency ?-2006 and the International ISMN Agency ?-2006.
- He is presently Chairman of the International ISMN Agency 2006–present.
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