RT Book T1 Abortion: medical progress and social implications T2 Ciba Foundation symposium JF Ciba Foundation symposium A2 Porter, Ruth LA English PP London PB Pitman YR 1985 UL https://krimdok.uni-tuebingen.de/Record/27283016X SN 0272798150 K1 Abortion : Congresses K1 Abortion K1 Konferenzschrift : 1984 : London K1 Schwangerschaftsabbruch