RT Article T1 Is/Ought: A Risky Relationship Between Theology and Science JF Zygon VO 15 IS 4 SP 377 OP 395 A1 Hefner, Philip 1932- LA English PB Wiley-Blackwell YR 1980 UL https://www.ixtheo.de/Record/1827945591 DO 10.1111/j.1467-9744.1980.tb00398.x