AUTHOR: Dan RÂPĂ BIBLIOLOGICAL NOTES REGARDING “DER TÜRKENKALENDER FÜR <1455>”, (MAINZ, 1454) Danubius, XX, Galaţi, 2002, pp. 139-150. Abstract The article deals with a rare and valuable piece of bibliophily, the incunable Eine Mahnung Der Christenheit Widder Die Durken (commonly known by the name Der Türkenkalender fûr <1455>), printed in Mainz, in 1454. The work…