Us wurk.
Rijksuniversiteit te Groningen.Fries Instituut.
Groningen : It Ynstitút,
1952-
MLA international bibliography of books and articles on the modern languages and literatures (Complete edition)
Sociological abstracts
Issues for  lack the designation "jiergong"; each number is divided into parts some of which are combined.
"Meidielingen fan it Frysk Ynstitút oan de Ryksuniversiteit yn Grins".
Frisian language