Leavell, H. R. (1953). Report of the Chairman of the Executive Board of the American Public Health Association to the Governing Council, 1951-1952.
Παραπομπή Chicago StyleLeavell, Hugh R. Report of the Chairman of the Executive Board of the American Public Health Association to the Governing Council, 1951-1952. 1953.
Παραπομπή MLALeavell, Hugh R. Report of the Chairman of the Executive Board of the American Public Health Association to the Governing Council, 1951-1952. 1953.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.