TY - BOOK AU - Rosicky B Ed. AU - Heyberger K Ed. ED - Symposium on theoretical questions of natural foci of diseaes (1963 : Prague) TI - Proceeding on theoretical questions of natural foci of disease U1 - L:4p1,N63, K5 PY - 1965/// CY - Prague PB - Czechoslovak academy of science KW - Disease ER -