Yazar
Selwyn De Witt Collins
16 cilt bulundu.
Selwyn De Witt Collins · Arno Press
192 sayfa · 1937
Economic conditions / Public health / Socioeconomic Factors / Economic history / Social Medicine
Selwyn De Witt Collins · U.S. Govt. Off.
159 sayfa · 1931
Care and hygiene / Children / Diseases / Medical examinations / Mortality
Selwyn De Witt Collins · Govt. print. off.
Sayfa sayısı yok · 1922
School attendance. [from old catalog]
Selwyn De Witt Collins · U.S. Govt. print. off.
30 sayfa · 1936
Typhoid fever / United States / United States. Public Health Service / Vaccination
Selwyn De Witt Collins · U. S. Govt. Print. Off.
159 sayfa · 1928
Diseases / Epidemiology / Throat / Tonsillitis
Selwyn De Witt Collins · U.S. Govt. Print. Off.]
22 sayfa · 1955
Causes / Causes and theories of causation / Death / Diseases / Medical Statistics
Selwyn De Witt Collins · Federal Security Agency, Public Health Service]
22 sayfa · 1953
Chronic diseases / Influenza / Mortality / Pneumonia





