a person in the record
Boris Speransky
Russian geologist1885 to 1956
Wikidata names Mikhail Usov as doctoral advisor. Linked to Wikidata, VIAF, and GND.
How to read the marksstated by Wikidata or indexed by OpenAlex
Advisors on Wikidata1
From Wikidata, shown separately from the thesis records.
- stated by Wikidata
The line above and below3 steps
The advisors of their advisors, four steps up at most, in the thesis records and on Wikidata, each kind marked; a person in both is listed once.
- 1 step up
stated by WikidataMikhail Usov
- 2 steps up
stated by WikidataVladimir A. Obruchev
- 3 steps up
stated by WikidataIvan Vasil'evich Mushketov
Education and career2
From Wikidata, shown separately from the thesis records. Each place opens its Wikidata item.
- undatedstudied
- undatedworked