{"id":"000719900","type":"book","title":"Das islamische Reich unter den vier ersten Kalifen (632-661 n. Chr./11-40 h), 1:6,000,000 = The Islamic Empire under the first four caliphs (632-661 a.c./11-40 h)","publisher":"Ludwig Reichert","publisher-place":"Wiesbaden","author":[{"family":"Rebstock","given":"Ulrich"}],"issued":{"raw":"1989"}}