In a manner relating to the systematic study and documentation of phonograph records.
Formed by adding -ly to the adjective discographical, following the standard English pattern for creating adverbs. This allows the description of how something is done with reference to record documentation.
Adverbs ending in -ically often sound quite formal and technical—'discographically,' 'mathematically,' 'historically'—which makes sense because this kind of detailed record study is very precise and academic work.
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