TY - GEN AU - Frey,Seth AU - Sumner,Robert W TI - Emergence of integrated institutions in a large population of self-governing communities SN - 1932-6203 PY - 2020///0218 KW - Community Participation KW - methods KW - Group Structure KW - Humans KW - Internet KW - Online Social Networking N1 - Publication Type: Journal Article; Research Support, Non-U.S. Gov't UR - https://doi.org/10.1371/journal.pone.0216335 ER -