RT Article T1 The eight trigrams: variants and their uses JF History of religions VO 29 IS 4 SP 301 OP 317 A1 Cammann, Schuyler V. R. 1912-1991 LA English PB University of Chicago Press YR 1990 UL https://ixtheo.de/Record/1635327121 DO 10.1086/463201