Special regulations SR (series). 742-507-50. Inspection of supplies and equipment: Serviceability standards for persistent agents, mustard, H, mustard, H (German), mustard, distilled, HD, introgen mustard, HN-1, mustard-T mixture, HT, mustard-T mixture, HT (British), Lewisite, L, Changes 2; May 12, 1953.

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