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 2 . Lennunduse terminibaas. Eesti Keele Instituut, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//len/ISA/2/eng (16.10.2026)