, Dungeons & Dragons remained the best-known and best-selling role-playing game, with an estimated 20 million people having played the game and more than US $ 1 billion in book and equipment sales.

On 1 April, the city celebrates the publication of his best-known book The Praise of Folly.

Irenaeus ' best-known book, Adversus Haereses or Against Heresies ( c. 180 ) is a detailed attack on Gnosticism, which was then a serious threat to the Church, and especially on the system of the Gnostic Valentinus.

Machiavelli's best-known book, " Il Principe ," contains a number of maxims concerning politics, but rather than the more traditional subject of a hereditary prince, it concentrates on the possibility of a " new prince.

His best-known work was a book on education, De Disciplinis, published in 1531, and his writings on rhetoric included Rhetoricae, sive De Ratione Dicendi, Libri Tres ( 1533 ), De Consultatione ( 1533 ), and a rhetoric on letter writing, De Conscribendis Epistolas ( 1536 ).

Published in 1846, Typee was Melville's first book, and made him one of the best-known American authors overnight.

Perhaps its best-known appearance is in Lewis Carroll's whimsical poem " The Walrus and the Carpenter " that appears in his 1871 book Through the Looking-Glass.

Most of his best-known artworks are relatively close, but not exact, copies of comic book panels, a subject he largely abandoned in 1965.

Hoare in the influential book Structured Programming of 1972 by Dahl, Edsger Dijkstra and Hoare, perhaps the best-known academic book concerning software in the 1970s.

One of the best-known works on the history of HIV is 1987's book And the Band Played On, by Randy Shilts.

In New Zealand, the writings of one chief, Wiremu Te Rangikāheke, formed the basis of much of Governor George Grey's Polynesian Mythology, a book which to this day provides the de facto official versions of many of the best-known Māori legends.

In his best-known book, The Commercial Revolution of the Middle Ages ( 1971, with numerous reprints ), Lopez argued that the key contribution of the medieval period to European history was the creation of a commercial economy, centered at first in the Italo-Byzantine eastern Mediterranean, but eventually extending to the Italian city-states and over the rest of Europe.

Condorito remains the best-known Chilean comic book character.

His best-known book was Seduction of the Innocent ( 1954 ), which purported that comic books are dangerous to children.

Her best-known book, The Camomile Lawn, set on the Roseland Peninsula in Cornwall, was turned into a television series, and is an account of the intertwining lives of three families in rural England during World War II.

In the autumn of 1928, Kästner published his best-known children's book, Emil und die Detektive ( Emil and the Detectives ).

Two years later Grey produced his best-known book, Riders of the Purple Sage ( 1912 ), his all-time best-seller, and one of the most successful Western novels of all.

The best-known of these accounts is provided by the opening paragraph of his 1918 book Jungle Peace:

The Seven Habits of Highly Effective People, Covey's best-known book, has sold more than 25 million copies worldwide since its first publication in 1989.

These events were recalled in his best-known book Paper Lion, which was later adapted into a feature film starring Alan Alda, released in 1968.

Janosch ( real name Horst Eckert ) ( born March 11, 1931 ) is one of the best-known German artists and children's book authors.

At first only planning a short book on nationalism, he started work on Nationalism and Culture, which would be published in 1937 and become one of Rocker's best-known works, around 1925.

It is one of Gershwin's best-known compositions.

One of van Vogt's best-known novels of this period is Slan, which was originally serialised in Astounding Science Fiction ( September-December 1940 ).

The best-known and longest-running of these events is the rugby league rivalry between Great Britain and Australia ( see rugby league " Ashes ").

Although the Kebra Nagast is the best-known account of this belief, the belief predates the document.

The popular MP3 format is probably the best-known example, but the AAC format found on the iTunes Music Store is also common.

Adam of Bremen's best-known work is the Gesta Hammaburgensis Ecclesiae Pontificum ( Deeds of Bishops of the Hamburg Church ), which he began only after the death of the archbishop Adalbert.

" () or " A. B. C's " () is one of the best-known English language alphabet songs, and perhaps the one most frequently referred to as " the alphabet song ", especially in the United States.

The prehistory of arithmetic is limited to a small number of artifacts which may indicate conception of addition and subtraction, the best-known being the Ishango bone from central Africa, dating from somewhere between 20, 000 and 18, 000 BC although its interpretation is disputed.

Completed in 1824, the symphony is one of the best-known works of the Western classical repertoire.

Among the famous mathematicians and cryptanalysts working there, the most influential and the best-known in later years was Alan Turing who is widely credited with being " The Father of Computer Science ".

Bede's best-known work is the Historia ecclesiastica gentis Anglorum, or An Ecclesiastical History of the English People.

In the words of Charles Plummer, one of the best-known editors of the Historia Ecclesiastica, Bede's Latin is " clear and limpid ... it is very seldom that we have to pause to think of the meaning of a sentence ... Alcuin rightly praises Bede for his unpretending style.

The work is probably based on the older Mesopotamian genre of the " city lament ", of which the Lament for Ur is among the oldest and best-known.

The best-known bee species is the European honey bee, which, as its name suggests, produces honey, as do a few other types of bee.

The best-known example in the recent past is the Kennedy assassination conspiracy literature, though similar material exists concerning the September 11 attacks, the crash of TWA Flight 800, and the spread of AIDS in the black community.

The CRTC regulates all Canadian broadcasting and telecommunications activities and enforces rules it creates to carry out the policies assigned to it ; the best-known of these is probably the Canadian content rules.

The best-known of these is the nucleolus, which is mainly involved in the assembly of ribosomes.

Meteor Crater is perhaps the best-known example of a small impact crater on the Earth.

* Many safety clutches are not friction clutches, but belong to the interference clutch family, of which the dog clutch ( see below ) is the best-known.

The 1000-kilometre Kinshasa-Kisangani route on the Congo River is the longest and best-known.