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21Battle of Hat Dich — Part of the Vietnam War …
22Steam engine — A steam engine is a heat engine that performs mechanical work using steam as its working fluid. [ [http://www.britannica.com/EBchecked/topic/564472/steam engine steam engine Britannica Online Encyclopedia ] ] Steam engines have a long history,… …
23Ballista — The ballista (Latin, from Greek βαλλίστρα ballistra , from βάλλω ballō , to throw ), plural ballistae, was a weapon developed from earlier Greek crossbows. It relied upon different mechanics using instead of a prod two levers with torsion springs …
24Seabird — This article is about the animal. For the alternative rock band of the same name, see Seabird (band). The Sooty Tern is highly aerial and marine and will spend months flying at sea, returning to land only for breeding.[1] Seabirds (also known as… …
25Talyllyn Railway — Heritage Railway name = Talyllyn Railway Rheilffordd Talyllyn caption = Locomotive No. 4 Edward Thomas stands at Tywyn Wharf station – April 2005 locale = flagicon|WAL Mid Wales terminus = stnlnk|Tywyn Wharf latitude = 52.583 longitude = 4.087… …
26Crusher — For other uses, see Crusher (disambiguation). A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. Crushers may be used to reduce the size, or change the form, of waste materials so they can be more… …
27Britten-Norman Islander — infobox Aircraft name = Islander type = Utility aircraft/Airliner manufacturer = Britten Norman caption = BN 2B Islander VP FBD operated by the Falkland Islands Government Air Service, Stanley, 1994. designer = John Britten, Desmond Norman first… …
28Glossary of firefighting equipment — Note: This list is incomplete. You can help Wikipedia by [http://en.wikipedia.org/w/index.php?title=Glossary of firefighting equipment action=edit adding to it] . 0 9 * 1 3/4 inch hose: see attack hose * 2 1/2 inch hose: see attack hose , supply… …
29Da Nang Air Base —     …
30Climate change mitigation — Fossil fuel related CO2 emissions compared to five of IPCC s emissions scenarios. The dips are related to global recessions. Data from IPCC SRES scenarios; …
