Oscar Blumenthal
![Oscar Blumenthal in 1905](https://upload.wikimedia.org/wikipedia/commons/f/f2/Oscar_Blumenthal_1905.jpg)
1
Published: [2021]
Superior document: Title is part of eBook package: De Gruyter DGBA Medicine and Life Sciences - <1990
2
3
Published: [2020]
Superior document: Title is part of eBook package: De Gruyter DGBA Library Information Science <1990