The Russian religious mind (II) : the middle ages : the 13th to the 15th Centuries Volume 2.

Fedotov, G.P.. The Russian religious mind (II) : the middle ages : the 13th to the 15th Centuries. Volume 2.. / . - Belmont : Nordland Publishing Company, 1975 . - xiv, 405 p. 22 cm. - (Collected Works of George P. Fedotov vol. 4 )
0-913124-19-2