 Abbreviations and Annotations.
 3 a --- refers to the Third Edition of the Upper Triad Material ~ Articles in three volumes
 3 c --- refers to the Third Edition of the Upper Triad Material ~ Commentaries in fifteen volumes
 3 m --- refers to the Third Edition of the Upper Triad Material ~ Miscellany in two volumes
 Article --- refers to an un-numbered article within a given book in the CCP series
 A 1 --- refers to Article No. 1
 C 1 --- refers to Commentary No. 1
 CCP --- refers to the series of books entitled Christian Contemplative Prayer
 CCP 1 --- refers to the first volume in the CCP series
 CCP 1.2 --- refers to the second section of the first volume in the CCP series
 PJO --- refers to the series of books entitled Personal Journeys
 Section --- refers to the section of material within a given book in the CCP or PJO series
 Series --- refers to a series of books, e.g., CCP, PJO, 3 a, 3 c, or 3 m
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