Author: Mathias, Dr. Fr. X.
Title: Organum comitans ad Vesperale Romanum quod juxta editionem Vaticanam composuit Dr. Fr. X. Mathias.
Description: Ratisbonae et Romae, Sumptibus et Typis Friderici Pustet, MCMXVI. original hardcover, gilt on spine. -(very) good.-(slightly rubbed, paper browned as usual, signs of use).

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