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" Avoirdupois Weight. 16 drams (dr.) = 1 ounce (oz.). 16 ounces — 1 pound (Ib.). 100 pounds — 1 hundredweight (cwt.). .2000 pounds - 1 ton (t.). The long ton is still used in the United States Custom Houses and in wholesale transactions in iron and... "
Mental arithmetic; or, A concise system of commercial arithmetic - Σελίδα 16
των James Strachan (F.E.I.S.) - 1852 - 92 σελίδες
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