TY  - SER
AU  -  Kropotkin, Petr Alekseevich, kniaz, 
TI  -  Mutual Aid : :  A Factor of Evolution 
AV  - HM 
PY  - 2003///
PB  -  Project Gutenberg, 
KW  -  Cooperation
KW  -  Social institutions
KW  -  Social groups
N1  -  Public domain in the USA;  Text
UR  -  http://www.gutenberg.org/ebooks/4341
ER  -