Universal Decimal Classification
Toggle navigation
Home
Advanced search
About...
My account
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Home
R
:
90
terms
Radiation according to wavelength. Hertzian waves. Light colours
Rail transport. Rail traffic
Rail vehicle engineering. Locomotives. Rolling stock. Railway yards. Installations and services concerned with rolling stock
Railways in general. Permanent way. Track construction
Railways. Tramways. Cableways
Rajasthani
Rarefied gases. Vacuum physics
Re-formed churches
Reactions in terms of reagents. Reagents
Records management
Recreation. Entertainment. Games. Sport
Recruitment of forces. Requisition of supplies, resources. War potential. Levies
Recruitment. Missionary activity. Missions broadly. Missiology
Reference works
Regional economics. Territorial economics
Regional economics. Territorial economics. Land economics. Housing economics
Regional geography
Regionalization according to specialized points of view
Regions of ancient American cultures. Pre-Columbian America
Regions of the so-called barbarians
Regressive and reparative processes
Regulation of economic order and control
Regulation of individual sectors of the economy
Regulation of prices, tariffs, finance, credits and accounts
Reinforcement and reparative materials and equipment
Relation between people and state. Internal political activities
Relations between church and state. Policy towards religion. Church policy
Relations between faiths or with society in general. Religion and society
Relations with the public. Regulations for library use
Relative location, direction and orientation
Relief techniques
Religion of the Biblical period. Ancient Judaism. Old Testament religion
RELIGION. THEOLOGY
Religions characterised by various properties
Religions of antiquity. Minor cults and religions
Religions of China
Religions of classical antiquity
Religions of Europe
Religions of Iran
Religions of Japan
Religions of Korea
Religions of Mesopotamia
Religions of South and Central America. Pre-Columbian indigenous religions
Religions originating in Indian sub-continent. Hindu religion in the broad sense
Religions originating in the Far East
Religious activities. Religious practice
Religious organization and administration
Religious organizations. Religious societies and associations
Religious systems. Religions and faiths
Religious, ecclesiastical architecture. Sacred and funerary buildings
Remote sensing
Renaissance. Baroque. Rococo. Colonial
Reports. Notices. Bulletins
Reproduction. Growth. Development
Reptilia (Reptiles)
Research technique. Preparation. Tabulation
Residents (national or non-national)
Respiration. Breathing. Respiratory system
Réunion (France)
Revived language
Rhaeto-Romance languages
Rhetoric of speech. Art or technique of oral expression
Rhetoric. The effective use of language
Riding
Riding and driving. Horse and other animal sports
Rights and obligations of members
River bank protection. Straightening of rivers and streams. Other river improvement works
Road transport
Rock characteristics and properties generally. Physical and physicochemical petrology
Rodentia. Lagomorpha
Roman Catholic church
Romance / Romanic languages
Romance languages
Romania. Republic of Romania. România
Romanian
Romanian language
Romanian literature
Romanic, 'Latin' peoples
Romany / Gipsy / Gypsy
Rosidae
Rosidae
Runtime environment
Rural engineering
Russia. Russian Federation. Rossiya. Rossiiskaya Federatsiya
Russian
Russian Federation in Asia
Russian language
Russian literature
Rutaceous and moraceous fruits. Citrous fruits in general
Rwanda. Republic of Rwanda