I've never heard of it in drop D tuning. Theres one here arranged by Mr. Delcamp.
Collection of classical guitar sheet music, Nivel 10 Claude DEBUSSY (1862-1918) La fille aux cheveux de lin, prélude I/8
Another at this site,
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Both are in G.
And another at Mr. Cohey's site,
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This one is in E.
Hope this helps.