TY - CHAP A1 - Anheier, Helmut K. A1 - Seibel, Wolfgang T1 - The Third Sector in Comparative Perspective: Four Propositions T2 - The Third Sector: Comparative Studies of Nonprofit Organizations Y1 - 1990 UR - https://opus4.kobv.de/opus4-hsog/frontdoor/index/index/docId/1334 SN - 978-3110117134 SP - 379 EP - 387 PB - De Gruyter CY - Berlin [u.a.] ER -