[From the work experience of the newly organized Leningrad Province Branch of the All-Russian Medical Society of Hygienists and Sanitary Physicians].
D006920:Hygiene; D012426:Russia; D012955:Societies, Medical
Iz opyta raboty vnov' organizovannogo Leningradskogo oblastnogo otdeleniia Vserossiiskogo nauchno-meditsinskogo obshchestva gigienistov i sanitarnykh vrachei.