%A ?. ?. ??????????? %J ??????????? ???????????? ?????? %T ????????? ????? ????? ?. ?. ????????? ?? ?????? ???????????????? ??????????? %X The paper is devoted to investigations in the field of space mappings. We prove that open discrete mappings f ? W1,n loc such that their outer dilatation KO(x, f) belongs to Ln?1 loc and the measure of the set Bf of branching points of f is equal to zero have finite length distortion. In other words, the images of almost all curves ? in the domain D under the considered mappings f : D ? Rn, n ? 2, are locally rectifiable, f possesses the (N)-property with respect to length on ? , and, furthermore, the (N)-property also holds in the inverse direction for liftings of curves. The results obtained generalize the well-known Poletskii lemma proved for quasiregular mappings. %N 7 %P 969-975 %V 61 %D 2009 %I ??????????? ???????? ???? %L zu213845