Several fields of discrete mathematics, particularly theoretical computer science, graph theory, and combinatorics, are important in addressing the challenging bioinformatics problems associated with understanding the tree of life.

Several institutions, besides those already mentioned, played important parts.

Several billion kilograms of polyesters are produced industrially annually, important products being polyethylene terephthalate, acrylate esters, and cellulose acetate.

Several important cinematic movements, including the Nouvelle Vague, began in the country.

Several types are existent in Qing dynasty and used in dishes of stewing hams ( 火腿炖肘子 ), and vegetables, or for a wide variety of soup and important soup stocks.

Several important institutional changes took place in this period, such as free and mandatory schooling introduced 1842 ( as first country in the world ), the abolishment of a previous national monopoly on trade in handicrafts in 1846, and a stock company law in 1848.

His critically acclaimed book Lyrics on Several Occasions of 1959, an amalgam of autobiography and annotated anthology, is an important source for studying the art of the lyricist in the golden age of American popular song.

Several formerly important franchise courts were not officially abolished until Courts Act of 1971.

Several important buildings and structures were built during this time, including the Kansas City City Hall and the Jackson County Courthouse — both added new skyscrapers to the city's growing skyline.

Several industry groups also recognize light pollution as an important issue.

Several types of molecules are particularly important during morphogenesis.

Several of the more important ways observations can be affected by human psychology are given below.

Several other important engravers also made cards, including Master ES and Martin Schongauer.

Several economically important products come from Rosaceae, including many edible fruits ( such as apples, apricots, plums, cherries, peaches, pears, raspberries, and strawberries ), almonds, and ornamental trees and shrubs ( such as roses, meadowsweets, photinias, firethorns, rowans, and hawthorns ).

Several important political innovations of classical antiquity came from the Greek city-states and the Roman Republic.

Several Referendums supported the state being in control of the most important utilities and energy companies.

Several important modern cities, including Stockholm and Lviv, were founded in the 1250s.

Several important cultural achievements were made in the decade, including publication of Roger Bacon's important scientific work Opus Majus and Thomas Aquinas ' Summa contra Gentiles.

Several lakesthe most important of which are Lake Herăstrău, Lake Floreasca, Lake Tei, and Lake Colentinastretch across the northern parts of the city, along the Colentina River, a tributary of the Dâmbovița.

Several singular oak trees, such as the Royal Oak in Britain and the Charter Oak in the United States, are of great historical or cultural importance ; for a list of important oaks, see Individual oak trees.

Several important trade routes from India and China ( including the Silk Road ) passed through Bactria and, as early as the Bronze Age, this had allowed the accumulation of vast amounts of wealth by the mostly nomadic population.

Several of Gauthier's students are now important moral, political, and legal philosophers in the United States and Canada.

Several important features of visual perception can be traced to the retinal encoding and processing of light.

Several important diseases of the nervous system are associated with dysfunctions of the dopamine system.

Several new commercial Atari 7800 titles such as Beef Drop, B * nQ, Pac Man Collection, Combat 1990, Santa Simon, and Space War have been created and released.

Several disciplines have developed as separate branches of comparative law, including comparative constitutional law, comparative administrative law, comparative civil law ( in the sense of the law of torts, delicts, contracts and obligations ), comparative commercial law ( in the sense of business organisations and trade ), and comparative criminal law.

Several of Griffith's later films were also successful, but his high production, promotional, and roadshow costs often made his ventures commercial failures.

Several horror films, Kairo, Dark Water, Yogen, the Grudge series and One Missed Call met with commercial success.

Several companies offer swaging presses ( both manual and hydraulic ) that will manufacture on a small scale jacketed bullets that can rival or surpass the quality of commercial jacketed bullets.

Several sequels to Super Mario Kart have been released, for consoles, handhelds and in arcades, each enjoying critical and commercial success.

Several sequels to Super Mario Kart have been brought out for successive generations of Nintendo consoles, each receiving commercial success and critical acclaim.

Several fighting games achieved greater commercial success, including SNK's Art of Fighting and Samurai Shodown as well as Sega's Eternal Champions.

Several countries worldwide continue efforts to qualify Hall thruster technology for commercial uses.

Several other commercial products are also produced from the trees, including essential oils, extracted oleoresins, and nutmeg butter ( see below ).

Several commercial growers have converted their crops to guar production to support the increasing demand for guar and other organic crops in the United States.

Several fashion models who were deemed to commercial and too curvacious were fed up with industry standard and took a different approach.

Several species are important commercial fish, for example the blue grenadier ( Macruronus novaezelandiae ) that is fished in the southwest Pacific and the North Pacific hake ( Merluccius productus ) that is fished off western North America.

Several courts have found that merely linking to someone else's website, even if by bypassing commercial advertising, is not copyright or trademark infringement, regardless of how much someone else might object.

Several commercial redevelopment opportunities were proposed by the D. C. government and consultants, including relocating the University of the District of Columbia to the campus or developing office and retail space.

Several commercial vendors supply international topographic map series.

Several companies offer commercial document reconstruction services.

Several coverage policies have been developed for TMS through both government and commercial payers.

Several commercial plans added coverage for TMS in 2012 including Capital Blue Cross, Health Netand Anthem.

Several new commercial and industrial projects were developed.

Several businesses were located near this commercial site from 1850 to 1950, including a creamery ( dairy plant ) reflecting the predominantly dairy-based economy in the immediate surrounding area at the time.

Several shopping plazas, strip malls, and other commercial properties are found at or near this intersection.

Several attempts have been made by commercial developers to buy up Pimmit properties and convert them to higher-density housing such as condominiums or town houses, but so far these have been resisted by homeowners.

Several tracks which later became critical and commercial favorites were initially rejected by Gordy ; the two most notable being the Marvin Gaye songs, " I Heard It Through the Grapevine " and " What's Going On ".