What does Serb stand for?

Serbian (DIAR)

Riobamba - Ecuador - ICAO location identifier (ICLI)

Selective Early Retirement Board - Army

Serbia

Shuttle Engineering Review Board - NASA (NASA)

Societe Europeene de Radiobiologie - European Society for Radiation Biology - ESRB (EAIO)

Soviet External Relations Branch (CARL)

Study of Enhanced Radiation Belt (SAUS)

Study of the Enhanced Radiation Belt - NASA

Systems Engineering Review Board - NASA (NASA)