The sc_mappack20b.zip file you have requested: Maps Levels Missions / Map Packs / sc_mappack20b.zip - 6.24mb is not available. Perhaps try browsing all files for the game Half-Life and upload any files you want to share or are missing. This is the only information we could locate:

SvenCo op 2.0B Map Pack First Released 28 03 02 Extract the zip to your Half Life directory this will place all maps in their proper directories. Includes Map Haywire Author SvenCo-op 2.0B Map Pack
First Released 28/03/02

Extract the zip to your Half-Life directory, this will place all maps in their proper directories.

Includes:
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Map: H

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