Pare Boon Derr. CYoung, Sir William, bart.] 17257-1788, supposed *yc author. A new system of fortification ... .389A LTTO. (Card 2) .196 2p.f., 11, 18 p. fold.plate. 17cm. (8vo) Also issued without statement "Solely meant ... St. Vincent” in title. Engraved plate signed: Caliba fecit. With this copy are bound 8 leaves containing engraved military diagrams, apparently not in- trinsic to this work.
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