STRAIN AND FAMILY EFFECTS ON RESISTANCE OF " LEGHORN " HENS AGAINST DIFFERENT DISSAE W. HARTMAN, G. HEIL, D. V. D. HAGEN and H. Ch. LOELIGERGenet. Sel. Evol., 10 4 (1978) 588DOI: https://doi.org/10.1051/gse:19780429