Japanese Textbook Linked Open Data (LOD) is a dataset which includes bibliographic information for textbooks published up to now since the 7th curriculum guideline enforced in 1992, as well as the related information such as the subject areas, the subjects, teaching units, compiling prospectus and the curriculum guidelines.
The following lists represents the usage year for the textbooks.
The SPARQL endpoint (experimental) for the dataset is available at: https://dydra.com/masao/jp-textbook/@query