[PROTECTION OF THE ATMOSPHERIC AIR--ONE OF THE LEADING PROBLEMS IN HYGIENE SCIENCE AND SANITARY PRACTICE].
D000397:Air Pollution; D006920:Hygiene; D012499:Sanitation; D014586:USSR
AIR POLLUTION; SANITATION; USSR
OKHRANA ATMOSFERNOGO VOZDUKHA-ODNA IZ VEDUSHCHIKH PROBLEM GIGIENICHESKO I NAUKI I SANITARNO I PRAKTIKI.