[Basic stages in the development of an aviation health service].
D001359:Aviation / Q000266:history*; D004632:Emergency Medical Services / Q000266:history; D006296:Health Services / Q000266:history*; D006297:Health Services Accessibility; D049673:History, 20th Century; D006767:Hospitals, District; D014586:USSR
Osnovnye étapy razvitiia sluzhby sanitarnoĭ aviatsii.