1. The Social Meanings of Suicide;Douglas,1967
2. Epidemiological study of appendicitis in Khartoum;Osman;Int. sung. Dig.,1974
3. Rapport de statistiques sanitaires mondiales;World Health Organization;Wld. Hlth. Statistist. Rep.,1968
4. Appendectomy in the Federal Republic of Germany: epidemiology and medical care patterns;Lichtner;Med. Care,1971
5. Die Pseudo-appendicitis Juvenilis;Georgakopoulos;Geburtsh. Fraüenheilk.,1974