Bibliographisches System der gesammten Wissenschaftskunde

"Ich übergebe der gelehrten Welt nachstehendes Werk ungeachtet seiner von mir selbst wohl am wenigsten verkannten Mängel dennoch mit der Zuversicht dass es einem von Vielen gefühlten Bedürfnisse entsprechen und auch wohl grossentheils abhelfen werde. Meiner Absict nach ist es, was schon der Titel nachweist, nicht bloss für Bibliothecare bestimmt, da darauf gleichfalls die Anordnung verschiedenartiger Papiere gegründet werden kann, wie z.B.

"The BC consists of 14 main topics which are arranged in 25 main classes. This is achieved by dividing some topics, such as History and Literature, into a number of main classes. (...) The BC uses an alphanumeric system of notation which, as Schleiermacher himself pointed out, is a system that was well known in Europe before 1800. Frederik Rostgaard (...) used letters of the roman alphabet to identify main classes, and long before Rostgaard the system had been used in medieval cloister libraries.

Schema des Realkatalogs der Königlichen Universitätsbibliothek zu Halle a.S.

"Ich bin der Meinung-, dass jeder Realkatalog einer Bibliothek ein, so zu sagen, individuelles d. h. ein nur für eine bestimmte Bibliothek ausgearbeites Werk sein soll, und dass nur gewisse Grundeintheilungen in der Anlage von Realkatalogen für Bibliotheken, die Werke aus allen Disciplinen enthalten, gemeinsame sein können. Jede Bibliothek, namentlich jede Universitätsbibliothek hat ihr besonderes Gepräge, das ihr die Geschichte der Sammlung aufgedrückt hat. In der einen ist dieses Fach besonders stark vertreten, in der andern jenes.

Roget's Thesaurus

"Roget's Thesaurus is composed of six primary classes. (...) Each class is composed of multiple divisions and then sections. This may be conceptualized as a tree containing over a thousand branches for individual 'meaning clusters' or semantically linked words. Although these words are not strictly synonyms, they can be viewed as colours or connotations of a meaning or as a spectrum of a concept. One of the most general words is chosen to typify the spectrum as its headword, which labels the whole group.

Classification of the Literature of Freemasonry and Related Societies

"The Masonic Classification herewith presented is the result of some twenty-two years of practical experience in the largest masonic library in the world — the Library of the Supreme Council, 33rd Degree at Washington. This Library, in addition to its thousands of items on Freemasonry and related societies, contains also thousands upon thousands of general works in all branches of literature.

Library Classification

"There are already in the field many rival schemes of classification for libraries. The present publication is not intended to add one to the number, but rather to offer a way of escape for those who shrink from the intricacies and difficulties of the elaborate systems, and to substitute for painstaking analytical classification a simple arrangement which it is believed is better adapted to be practically useful in a library, while doing away with most of the work involved in carrying out one of these schemes."

Glossary of Forest Terminology

"This forest terminology largely follows that contained in the British Commonwealth Forest Terminology, or the Forest Terminology of the Society of American Foresters. Where these references have not been in agreement, the definition more suitable to the condition in Ontario has been used. Certain terms in this glossary either are not found in, or are not in agreement with, these texts. Such terms are marked with an asterisk."

Army Medical Library Classification Medicine

"The Classification covers the field of medicine and its related sciences. With it are used the various schedules of the Library of Congress Classification in order to provide an orderly arrangement for subjects bordering on medicine and for non-medical reference books. The LC schedules are used extensively; for example, social questions relating to the blind and the deaf are classified in HV (Social Sciences). When classification according to the LC schedules is indicated, only the class letters have been furnished in the present index.