a theoretical vertical distribution of the physical properties of the atmosphere up to an altitude of 50 km established by international agreement
a theoretical vertical distribution of the physical properties of the atmosphere up to an altitude of 50 km established by international agreement
ISA 1 . Lennunduse terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://127.0.0.1:5577/search/unif//len/ISA/1/est (09.10.2026)