Officially

From the publisher, with its history intact.

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Civil Aviation Authority of Singapore

caas.gov.sg

Imported from official source

Regulator in Singapore; safety publications from its own official source.

Type
Regulator
Scope
SG · national
Website
caas.gov.sg
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Publications 23

Officially records where a publication came from, not whether it is true. Imported records are reproduced from an organization's own official source.