main drum barrel
31Peak oil — A logistic distribution shaped production curve, as originally suggested by M. King Hubbert in 1956 …
32Oil sands — The Athabasca oil sands in Alberta, Canada, are a very large source of bitumen, which can be upgraded to synthetic crude oil. Bituminous sands, colloquially known as oil sands or tar sands, are a type of unconventional petroleum deposit. The… …
33percussion instrument — a musical instrument, as the drum, cymbal, triangle, xylophone, or piano, that is struck to produce a sound, as distinguished from string or wind instruments. [1870 75] * * * A musical instrument that is struck (or sometimes shaken or scraped) to …
34XM8 rifle — Infobox Weapon name=XM8 caption=The latest version of the XM8 origin=flagcountry|Germany flagcountry|United States type=Assault rifle is ranged=yes service=Cancelled used by=None wars= design date=2002 manufacturer=Heckler Koch production… …
35Airsoft gun — This article is about airsoft guns. For the sport, see Airsoft. Classic Army M15A4 AEG with Aimpoint Comp2 Replica Red dot sight Airsoft guns are replica firearms that propel plastic pellets (also known as BBs) by way of compressed gas, electric… …
36SIG SG 550 — SG 550 The SG 550 service rifle Type Assault rifle Place of origin …
37MG 42 — (top) Type General purpose machine gun Place of origin …
38architecture — /ahr ki tek cheuhr/, n. 1. the profession of designing buildings, open areas, communities, and other artificial constructions and environments, usually with some regard to aesthetic effect. Architecture often includes design or selection of… …
39Native American music — Introduction music of the indigenous peoples of the Western Hemisphere. The Americas contain hundreds of native communities, each with its own distinctive history, language, and musical culture. These communities although united in placing… …
40Heckler & Koch HK21 — Infobox Weapon name=HK21 caption= origin=flag|West Germany type=General purpose machine gun is ranged=yes service= used by=See Users wars= designer=Heckler Koch design date=1961 manufacturer=Heckler Koch production date= number= variants=See… …
