C#/.NET: In need of a few (de)compression libraries

My Google-Fu seems to b开发者_如何学Ce weak today. I've so far been able to find libraries for ZLib and BZip2 (SharpZipLib), and LZMA (7-Zip), but not Huffman, IMA ADPCM, and SPARSE.

Does anyone know of any pure .NET libraries that can handle these compression methods?

Thanks!

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I've found this for Huffman...