%0 Journal Article %A E. W. Somerville %T PERTHES' DISEASE OF THE HIP %D 1971 %J The Journal of Bone & Joint Surgery British Volume %P 639-649 %V 53-B %N 4 %R 10.1302/0301-620X.53B4.639 %U https://doi.org/10.1302/0301-620X.53B4.639 %K