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40
Wikipedia definition
1. RBL 40 pounder Armstrong gunThe Armstrong RBL 40 pounder gun was an early attempt to use William Armstrong's new and innovative breechloading mechanism for medium artillery.
Read “RBL 40 pounder Armstrong gun” on English Wikipedia
Read “40ポンドアームストロング砲” on Japanese Wikipedia
Read “RBL 40 pounder Armstrong gun” on DBpedia

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