Milner, J. 1. (1840). The key of heaven or A manual of prayer, to which are now added an abridgement of the Christian doctrine, the acts of faith, hope, and charity, and prayer before Mass. Dublin [etc.]: Thomas Richardson and Son.

Milner, John 1752-1826. The Key of Heaven or A Manual of Prayer, to Which Are Now Added an Abridgement of the Christian Doctrine, the Acts of Faith, Hope, and Charity, and Prayer Before Mass. Dublin [etc.]: Thomas Richardson and Son, 1840.

Milner, John 1752-1826. The Key of Heaven or A Manual of Prayer, to Which Are Now Added an Abridgement of the Christian Doctrine, the Acts of Faith, Hope, and Charity, and Prayer Before Mass. Dublin [etc.]: Thomas Richardson and Son, 1840.