ticari olarak resmen yayınlanmamış rapor veya bilgi

listen to the pronunciation of ticari olarak resmen yayınlanmamış rapor veya bilgi
Türkçe - İngilizce
grey literature
Informally published written material (such as reports) that may be difficult to trace via conventional channels such as published journals and monographs because it is not published commercially or is not widely accessible
ticari olarak resmen yayınlanmamış rapor veya bilgi