@ARTICLE{10665-220861, author = {World Health Organization}, journal = {Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire}, title = {Weekly Epidemiological Record, 1931, vol. 06, 07 [full issue]}, volume = {06}, year = {1931}, number = {07}, type = {Journal / periodical articles}, pages = {89 - 104} }