1. The geography of osteoarthrosis;Lawrence, J.S.; Sebo, M.,1980
2. Degenerative joint disease among populations in Wensleydale, England and Jamaica;Lawrence, J.S.; Molyneux, M.;IntlJEometeorol,1968
3. Pattern of osteoarthditis of the hip in Nigerians;Ebong, W.W.; Lawson, E.A.L.,1978
4. Osteoardtritis of the hip in Indians: an anatomical and clinical study;Mukhopadya, B.; Barooah, B.;Indian Orthop,1967
5. Extreme variations in racial rates of total hip arhroplasty for primary coxarthrosis: a population-based study in San Francisco;Hoaglund, F.P.; Oishi, C.S.; Gialamas, G.G.;Ann Rheum Dis,1995