TY  - SER
AU  -  Blackmar, Frank W. 
TI  -  History of Human Society 
AV  - HM 
PY  - 2009///
PB  -  Project Gutenberg, 
KW  -  Sociology
KW  -  Civilization
KW  -  Progress
N1  -  Public domain in the USA;  Text
UR  -  http://www.gutenberg.org/ebooks/30610
ER  -