TY  - SER
AU  -  Mackenzie, Henry, 
TI  -  Essay on the Life and Institutions of Offa, King of Mercia, A.D. 755-794 
PY  - 2014///
PB  -  Project Gutenberg, 
N1  -  Public domain in the USA;  Text
UR  -  http://www.gutenberg.org/ebooks/47447
ER  -