PRACE DOKTORSKIE - SZWECJA 551,161 ASHRAF RIFAT NISAR The epidemiology of breastfeeding and its impact compared to other modes of feeding on infections and growth in apoor population : [akademisk avhandling] / by Rifat Nisar Ashraf ; Department of Social Preventive Paediatrics, King Edward Medical College, Lahore and Department of Clinical Immunology and Biometric Unit, Depatrment of Anatomy University of Göteborg. - Göteborg : University, 1993. - 79, 72 s. : wykr. ; 24 cm Zawiera 5 prac współaut. ISBN 91-628-0946-6