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Liber Orationum Psalmographus: colectas de Salmos del Antiguo Rito Hispánico . Edited by Jorge Pinell O.S.B. (Monumenta Hispaniae Sacra, Serie Litúrgica, ix). Pp. 288. Barcelona-Madrid: Institute Enrique Flórez, 1972. 650 pts. (cloth), 600 pts. (paper).

of barely 70 pages the author manages to give a most satisfactory historical and diplomatic account of these large holdings which run into thousands of volumes. It is, indeed, difficult to decide what to admire more—his thorough inside knowledge or his mastery of the widely dispersed specialised and editorial literature or his superb skill in presentation. To say that this book constitutes a veritable landmark is an understatement. It does what no other book has done: it makes accessible these sources in a down-to-earth practical and modest way by avoiding all unnecessary diplomatic jargon. It attains the rarest of all achievements a book can attain: it satisfies the scholarly demands of the seasoned researcher as well as of the beginner. Both author and publisher must be warmly congratulated on this book, which auspiciously inaugurates the new series of Subsidia Medievalia.