English
العربية
中文
Français
Pусский
Español
Home
Statistics
DOI module
Partners
Login
Back to statistics home page
DOIs by Method
Method
DOIs
Acquisition
1,829,035
In-house copy
91,155
In-house variant
19,251
Novel distinct PGRFA
45,994
Observation - Natural
7,980
Observation - Inherited
182,982
Grand total
2,176,397