Altre informazioniOccupation: After receiving his first employmeny at the KB in The Hague in 1830, Holtrop worked as a librarian to the KB from 1835 to 1868. Reference: Nieuw Nederlands Biografisch Woordenboek I, 1937, p. 1143.
Altre informazioniOccupation: After receiving his first employmeny at the KB in The Hague in 1830, Holtrop worked as a librarian to the KB from 1835 to 1868. Reference: Nieuw Nederlands Biografisch Woordenboek I, 1937, p. 1143.