This diagram seeks to summarize the stemmatic 
		relationships between the main surviving and lost sources (the sigla of 
		the latter are enclosed in square brackets). Subscript letters are used 
		to distinguish between layers of revision and correction in individual 
		sources.  
				
				A
				summary of the conventions employed in such stemmatic 
				diagrams is available.
		To view details of a source 
		click on the siglum on the image.
		
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