2.10 Institutions
There are several institutions which are important to surveyors.
Among the most important we mention:
2.10.1 Zentralstelle für Internationale Dokumentation der Geodaesie
(Centre for International Documentation of Geodesy; address
Geod. Inst, der T.U., Mommsenstrasse 13, Dresden A27, East
Germany). It is responsible for the editing of the above-mentioned
'Bibliographia Geodaetica published by the IAG (see paragraph
2.7.2)).
2.10.2 Institut für Angewandte Geodaesie (Institute for Applied
Geodesy; IFAG, Kennedyallee 151, Frankfurt-am-Main, West
Germany). This institute publishes a set of documentation cards
Referate Kartei des IFAGDokumentationsdienstes' in German
only. It covers a great deal of geodetic publications especially
German. A very important publication of this institute is the
'Fachausgabe Geodaesie, PhotogrammetrieKartographie der Dezimal-
Klassifikation' (Professional edition of the UDC for Geodesy
PhotogrammetryCartography). As yet this is only available in
German.
2.xo.3 The International Institute for Aerial Survey and Earth
Sciences (formerly the International Training Centre for Aerial
Survey; ITC, Kanaalweg 3, Delft). It is responsible for the above
mentioned 'International Bibliography of Photogrammetry' (see
paragraph 2.4.3).
2.10.4 The Bouwcentrum (Building Centre, Weena 700, Rotterdam),
which is the Headquarters of the abovementioned Conseil Inter
national du Batiment (see heading 2.5). It is also responsible for
the CIB, the 'Directory of Facilities for Developing Countries'
and the 'Abridged Building Classification' (see heading 3.2.4).
3. Classification
3.1 Introduction
3.1.1 Libraries and documentation centres are concerned with
the collection of informationusually recorded in documents
and exploiting it to meet their users' needs. An important part of
this process is the analysis of the documents so that they can be
stored in a convenient place and yet be easily traced when sought
from a number of viewpoints. A wide range of techniques is used
to achieve this objective. A classification scheme facilitates the
filing of documents on similar objects together, as well as the re
trieval of information through various indexes.
3.2 Universal Decimal Classification {UDC)
3.2.1 This concept dates from the publication in 1876 of the
Decimal Classification of Melvil Dewey (DDC). In 1895 Paul
Otlet and Henri La Fontaine introduced the DDC to Europe,
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