TY  - BOOK
TI  - Patrologia Orientalis : Index Vols 1-50
AV  - L/Gr BQ 3031. P37 PO50 Index 
CY  - Brépols, Turnhout, 2008
KW  -  
KW  - Presentation - Origins and History of the PO
KW  - Avertissement - important difficulties re dating of early issues
ER  -