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 of Middleton's other children married into prominent families.

Several families from Bere island, County Cork were encouraged to send emigrants to Argentina by an islander who had been successful there in the 1880s.

Several disputed proposals link Indo-European to other major language families.

Several primitive families from these epochs have been described, including Numidotheriidae, Moeritheriidae, and Barytheriidae in Africa, and Anthracobunidae from the Indian subcontinent.

Several homes were destroyed and sixty families were displaced.

Several hundred women and over 100 children were deported to concentration camps ; a few children considered racially suitable for Germanisation were handed over to SS families and the rest were sent to the Chełmno extermination camp where they were gassed to death.

Several linguistic problems arise in the attempt to relate Sumerian with known language families.

Several families of the Lamiales have had their circumscriptions enlarged to accommodate genera transferred from Scrophulariacae sensu lato.

Several Chumash families are working to revitalize the language.

Several families settled that same year on Big River ; among them were Elisha Baker, his son Elijah and Joseph Reed from Bois Brule Bottom.

Several families lost their sons in the fighting.

Several other families including the Dickinsons, Munds, Copples, Pages Mullhollands and Tiptons had followed by the autumn of that year or the spring of 1877.

Several families responded to this advertisement and an assortment of German immigrant families followed him from Franklin County, Missouri.

Several families in and around Atkins faced the threat of starvation, and the Red Cross responded twice in early 1931, delivering food, clothes, and other necessities to those in need.

Several mixed white and Cherokee families also lived in or near the present site of Little Town, likely just east of the village in the Cherokee Neutral Lands or to the south, near Chetopa.

Several families ruled Bergen op Zoom in succession until 1795, although the title was only nominal since at least the seventeenth century.

Several families settled near Otsego Lake around 1762, but little further development occurred until after the American Revolution.

Several townsfolk and local historians claim that Montrose played a significant role in the Northern Trail of the Underground Railroad, housing several slave families in the area.

Several families from northern states, including the Ruthven, Champion, and Hooks families, settled the area.

Several Hardeman families still live in Matagorda county and Van Vleck has a road named Hardeman road This year, the railroad connected Van Vleck to Wharton Tx.

Several miles south, on Quitchupah Creek, several families were trying to homestead on land that was more barren than Muddy Creek.

Several other families are regionally dominant.