Sis-Books - biographical data

Name: Sis-Books
Name: S.I.S.-Books
Name: Roos, P. M.
Name: Roos-Hartwijk, D. F.
Name: Jacobs, L. L. M.
address: Nijmegen
address: Beek
address: Heerlen
address: Valkenburg
Period: 1973-1989
Period: 1989-....?
Period: ....-1997
Period: 1997-....