drilling without returns
71Boolean algebra — This article discusses the subject referred to as Boolean algebra. For the mathematical objects, see Boolean algebra (structure). Boolean algebra, as developed in 1854 by George Boole in his book An Investigation of the Laws of Thought,[1] is a… …
72baseball — /bays bawl /, n. 1. a game of ball between two nine player teams played usually for nine innings on a field that has as a focal point a diamond shaped infield with a home plate and three other bases, 90 ft. (27 m) apart, forming a circuit that… …
73Iraq — /i rak , i rahk /, n. a republic in SW Asia, N of Saudi Arabia and W of Iran, centering in the Tigris Euphrates basin of Mesopotamia. 22,219,289; 172,000 sq. mi. (445,480 sq. km). Cap.: Baghdad. Also, Irak. * * * Iraq Introduction Iraq Background …
74surveying — /seuhr vay ing/, n. 1. the science or scientific method of making surveys of land. 2. the occupation of one who makes land surveys. 3. the act of one who surveys: The surveying required nearly two days. [1425 75; late ME: act of examining… …
75Trepanning — Trepanation redirects here. For other uses, see Trepanation (disambiguation). A detail from The Extraction of the Stone of Madness , a painting by Hieronymus Bosch depicting trepanation (c.1488 1516) Trepanning, also known as trephination,… …
76List of Father Ted characters — The four main characters of Father Ted. Middle rear: Father Ted Crilly (Dermot Morgan), left: Father Dougal McGuire (Ardal O Hanlon), front: Father Jack Hackett (Frank Kelly), right: Mrs Doyle (Pauline McLynn). Father Ted was a cult comedy… …
77List of Hollows in Bleach — The Bleach anime and manga feature an extensive cast of beings known as Hollows (虚（ホロウ）, Horō?), the central antagonists of the series. These are malevolent, deceased souls of formerly ordinary humans[1] in the Bleach universe. Much of the series …
78dance — dancingly, adv. /dans, dahns/, v., danced, dancing, n. v.i. 1. to move one s feet or body, or both, rhythmically in a pattern of steps, esp. to the accompaniment of music. 2. to leap, skip, etc., as from excitement or emotion; move nimbly or… …
79Pakistan — /pak euh stan , pah keuh stahn /, n. 1. Islamic Republic of, a republic in S Asia, between India and Afghanistan: formerly part of British India; known as West Pakistan from 1947 71 to distinguish it from East Pakistan (now Bangladesh).… …
80ECONOMIC AFFAIRS — THE PRE MANDATE (LATE OTTOMAN) PERIOD Geography and Borders In September 1923 a new political entity was formally recognized by the international community. Palestine, or Ereẓ Israel as Jews have continued to refer to it for 2,000 years,… …
