demand-and-supply curves
61Gramophone record — A 12 inch (30 cm) 33⅓ rpm record (left), a 7 inch 45 rpm record (right), and a CD (above) A gramophone record, commonly known as a phonograph record (in American English), vinyl record (in reference to vinyl, the material most commonly used after …
62Economic growth — GDP real growth rates, 1990–1998 and 1990–2006, in selected countries …
63coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …
64geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …
65Hemoglobin-based oxygen carriers — At the beginning of 20th century excellent work of Landsteiner and co authors combine with significant progress in fields of heart and circulation physiology initiated development of modern transfusion medicine allowing that blood transfusion… …
66metalwork — metalworker, n. /met l werrk /, n. objects made of metal. [1840 50; METAL + WORK] * * * Useful and decorative objects fashioned of various metals. The oldest technique is hammering. After с 2500 BC, casting was also used, molten metal being… …
67Trip distribution — (or destination choice or zonal interchange analysis), is the second component (after trip generation, but before mode choice and route assignment) in the traditional four step transportation forecasting model. This step matches tripmakers’… …
68Scarcity value — is the economic factor that increases an item s relative price based more upon its relatively low supply. Whereas the prices of newly produced manufactured products depends mostly on the cost of production (the cost of inputs used to produce them …
69Columbia Slough — Coordinates: 45°38′36″N 122°46′07″W / 45.64333°N 122.76861°W / 45.64333; 122.76861 …
70Average cost — In economics, average cost is equal to total cost divided by the number of goods produced (the output quantity, Q). It is also equal to the sum of average variable costs (total variable costs divided by Q) plus average fixed costs (total fixed… …
