TY - `BOOK` AU - Ross, Alf TI - Directives and norms PB - Routledge & Kegan Paul [u.a.] CY - London [u.a.] PY - 1968 LA - eng SE - IX, 188 S. T2 - International library of philosophy and scientific method SN - 0-7100-3635-3 SN - 978-0-7100-3635-3 KW - Direktive / Norm / Deontische Logik CN - 71 B 529 CN - <DE> LOG 2 ROS 381/1 CN - JU/CC 2500 R823 CN - <PI> 160 Ros A CN - WS/CC 2500 R823 AN - UBHD-1068323 ER -