The Danish ISBN office is part of the Danish Bibliographic Centre .
The Danish ISBN office allocates the Danish ISBN prefixes 87 - in the ISBN - 10 case and 978 - 87 - in the ISBN - 13 case .
The Danish ISBN office , which allocates the Danish ISBN prefixes 87 - in the ISBN - 10 case and 978 - 87 - in the ISBN - 13 case , is part of the Danish Bibliographic Centre .