@book{
35-mdp39015028122904,
title = {Otto Hartwig, 1830-1903: an obituary},
author = {Neumann, Felix [Jonathan]},
address = {New York,},
publisher = {},
year = {1904},
pages = {3},
url = {http://hdl.handle.net/2027/mdp.39015028122904},
url = {https://katalog.fid-bbi.de/Record/35-mdp39015028122904}
}