The key to belief
Subtitle: the twentieth letter from the Risale-i nur collection
By: by Bediuzzaman Said Nursi
Publisher: Sözler Neşriyat, Ticaret, ve Sanayi; Distribution by Yeni Asya Yayınları
Published: 1987
Place of publication: Cağaloğlu, İstanbul
Language: eng
Translated from: tur
Number of pages: 118
Subjects: Nurculuk; Doctrines
Work titles: Risale-i nur. Risale 20