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Reference_counting

Sports Reference World Reference Base for Soil Resources Model OSI Military grid reference system Badan Sistem Referensi dan Rotasi Bumi Internasional Model DARPA 1Lib1Ref CEFR

Sports Reference
World Reference Base for Soil Resources
Model OSI
Military grid reference system
Badan Sistem Referensi dan Rotasi Bumi Internasional
Model DARPA
1Lib1Ref
CEFR