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