bioregistry uses isbnsearch. From its own website, it's not affiliated with ISBN in any way. It is a scraper.
It gets things wrong based on incorrect information from random websites. For example, this entry is clearly messed up, mixing a book on ventilation with a canonical molbio textbook:
0198506732
Originally reported here
geneontology/go-ontology#31026
I believe worldcat is a good authoritative source
https://www.worldcat.org/isbn/0198506732
And bioregistry should use this as primary. However you should check with actual library science experts
bioregistry uses isbnsearch. From its own website, it's not affiliated with ISBN in any way. It is a scraper.
It gets things wrong based on incorrect information from random websites. For example, this entry is clearly messed up, mixing a book on ventilation with a canonical molbio textbook:
0198506732
Originally reported here
geneontology/go-ontology#31026
I believe worldcat is a good authoritative source
https://www.worldcat.org/isbn/0198506732
And bioregistry should use this as primary. However you should check with actual library science experts