%0 Journal Article %A Lachlan, A. H. %T Initial Segments of Many-One Degrees %J Canadian journal of mathematics %D 1970 %P 75-85 %V 22 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-010-6/ %R 10.4153/CJM-1970-010-6 %F 10_4153_CJM_1970_010_6