TY - BOOK TI - Mutual aid : a factor of evolution / 1st Canadian ed AU - Kropotkin, Petr Alekseevich, kni︠a︡zʹ, 1842-1921. SN - 0921689276 (bound) PB - Black Rose Books PP - Montreal : Black Rose Books, c1989. PY - 1989 UR - https://library.korea.ac.kr/detail/?cid=CAT000000824957&ctype=m