main drum barrel
41152 mm towed gun-howitzer M1955 (D-20) — D 20 Type Towed howitzer Place of origin …
42Mossberg 500 — Type Shotgun Place of origin …
43Water-tube boiler — A water tube boiler is a type of boiler in which water circulates in tubes heated externally by the fire. Water tube boilers are used for high pressure boilers. Fuel is burned inside the furnace, creating hot gas which heats up water in the steam …
44African music — Introduction the musical sounds and practices of all indigenous peoples of Africa, including the Berber in the Sahara and the San (Bushmen) and Khoikhoin (Hottentot) in Southern Africa. The music of European settler communities and that of… …
45Timeline of Russian inventions and technology records — The Hall of Space Technology in the Tsiolkovsky State Museum of the History of Cosmonautics, Kaluga, Russia. The exhibition includes the models and replicas of the following Russian inventions: the first satellite, Sputnik 1 (a ball under the… …
46Romanesque architecture — is the term that is used to describe the architecture of Middle Ages Europe which evolved into the Gothic style beginning in the 12th century. The term Romanesque , meaning descended from Roman , was used to describe the style from the early 19th …
47Music of Sri Lanka — Music of South Asia Bangladesh Bhutan …
48Hubbert peak theory — Hubbert peak redirects here. For the episode of The West Wing, see The Hubbert Peak. M. King Hubbert s original 1956 prediction of world petroleum production rates …
49Music box — For other uses, see Music box (disambiguation). A music box A music box (also musical box) is a 19th century automatic musical instrument that produces sounds by the use of a set of pins placed on a revolving cylinder or disc so as to pluck the… …
50Florence Cathedral — Basilica of Saint Mary of the Flower Basilica di Santa Maria del Fiore (Italian) Basilica Sanctae Mariae Floris (Latin) …
