core + bib (Bibliographic Extension): terms relating to books and bibliography.

suggestedMinAge

Canonical URL: http://schema.org/suggestedMinAge

Thing > Property > suggestedMinAge

Minimal age recommended for viewing content.

Usage: Between 100 and 1000 domains
Values expected to be one of these types
Number
Used on these types
PeopleAudience

Schema Version 3.3