File talk:Air Ministry Second World War Official Collection CH15856.jpg
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What do MC, HC and OP abbreviations after the bomb weights refer to in the photo? joepaT 19:06, 25 December 2016 (UTC)
What do MC, HC and OP abbreviations after the bomb weights refer to in the photo? joepaT 19:06, 25 December 2016 (UTC)[reply]