« BRION AND MORTAR ELEVATOR AND DISTRIBUTOR. Tunnelling by Diamond Boring Machine. O'CONNOR'S CARRIAGE WHEEL. SHANKS' ELEVATOR AND DISTRIBUTOR. Paper Shields. Shade Trees., scientific american, 1872-07-20
« BRION AND MORTAR ELEVATOR AND DISTRIBUTOR. Tunnelling by Diamond Boring Machine. O'CONNOR'S CARRIAGE WHEEL. SHANKS' ELEVATOR AND DISTRIBUTOR. Paper Shields. Shade Trees., scientific american, 1872-07-20
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