Engineering Section: Training
Hepler, John M., Bradley, Leon A., Dunsmore, Herbert J., Hopper, Samuel H., Mangold, Walter S.Volume:
41
Language:
english
Journal:
American Journal of Public Health and the Nations Health
DOI:
10.2105/ajph.41.5_pt_2.113
Date:
May, 1951
File:
PDF, 427 KB
english, 1951