Polythematic Structured Subject Heading System

  1. UBV system
  2. UDC USE Universal Decimal Classification
  3. UDP
  4. UFO USE unidentified flying objects
  5. UHV USE ultrahigh voltage
  6. Ukrainian art
  7. Ukrainian language
  8. Ukrainian literature
  9. Ukrainian studies
  10. ULSI circuits
  11. ultracentrifugation USE medical techniques
  12. ultraclean water
  13. ultrafiltration
  14. ultrahigh voltage
  15. ultrahigh voltage electricity nets USE high voltage electric networks
  16. ultralight USE sport aircrafts
  17. ultraproduct USE ultraproducts
  18. ultraproducts
  19. ultrasonic sources USE ultrasound
  20. ultrasonography
  21. ultrasound
  22. ultraviolet astronomy USE extra-terrestrial observation equipments
  23. ultraviolet radiation
  24. ultraviolet spectrophotometry
  25. umbrellas USE haberdashery
  26. umlauts
  27. unaffecterd waters USE vadose water
  28. unattainable cardinal numbers USE cardinal numbers
  29. unchanneled thermal networks
  30. unconditioned convergence USE absolute convergence
  31. unconditioned protection USE machine protective devices
  32. unconsciousness
  33. uncontrolled dumping grounds
  34. uncontrolled open-air burning of wastes USE waste disposal services
  35. unconventional energy sources
  36. unconventional methods of machining
  37. unconventional railway vehicles
  38. unconventional transport
  39. uncorrect tasks USE computational methods in physics
  40. uncultivated soils
  41. undamped oscillations
  42. undemocratic movements USE macropolitical movements
  43. undercarriage wheels USE landing gear
  44. underfloor heating
  45. undergraduate education
  46. underground (architecture)
  47. underground (transport)
  48. underground fires USE mine fires
  49. underground gas storages
  50. underground power stations
  51. underground reservoirs
  52. underground stations
  53. underground structures
  54. underground thermal networks USE thermal networks
  55. underground transport USE urban underground transport
  56. underground walls
  57. underground water
  58. underground water deposits
  59. underground water drainage USE drainage
  60. underground water reservoirs
  61. underground water sources
  62. underlying rock
  63. undermining
  64. undersea basins USE deep sea basins
  65. undersea ridges
  66. undersea trenches
  67. understanding psychology
  68. understanding sociology
  69. underwear
  70. undivided co-ownership
  71. undreground railway USE underground (transport)
  72. unemployment
  73. unemployment rate
  74. unfair competition
  75. Uniats USE Greek Catholic Church
  76. unidentified flying objects
  77. unification
  78. uniform continuity
  79. uniform space
  80. uniform time
  81. uniformly continuous functions USE uniform continuity
  82. uniforms
  83. uninsulated conductors USE bare conductors
  84. unintentional learning USE teaching methods
  85. uninterrupted rolling mills USE rolling trains
  86. union catalogues
  87. union of states
  88. unipolar transistors
  89. uniprocessor servers
  90. unitarian state
  91. Unitarians
  92. units
  93. universal algebras of models
  94. universal categories
  95. universal constructions USE multifunction buildings
  96. Universal Decimal Classification
  97. universal history USE world history
  98. universal lathes
  99. universal measuring instruments
  100. universal mill plate
  101. universal rolling mill stands USE roll stands
  102. universal trade unions
  103. universe
  104. universe evolution eras USE relativistic models of universe
  105. universities
  106. university campuses
  107. university education USE college education
  108. university sports competitions USE sporting festivals
  109. university student USE students
  110. UNIX
  111. unjust enrichment
  112. unjustified enrichment USE civil liability
  113. unloaders
  114. unmarried cohabitees
  115. unmeasurable set USE measure
  116. unquided index USE index
  117. unsaturated fatty acids USE fatty acids
  118. unsaturated polyesters
  119. unscheduled air transport
  120. unscheduled ship transport USE water transport
  121. unsolicited email
  122. unstable state of atmosphere
  123. unstable zones
  124. untraditional sources heating
  125. Upanishads USE Brahminism
  126. upbringing
  127. upcast shafts
  128. upholstered furniture
  129. upper limb USE human body
  130. uracil
  131. Ural languages
  132. uranium
  133. Uranus
  134. urban anthropology
  135. urban automobile traffic
  136. urban bus transport
  137. urban economics
  138. urban forests USE park forests
  139. urban ground transport
  140. urban planning USE city planning
  141. urban public spaces USE public open spaces
  142. urban rail transport
  143. urban railways USE rapid transit systems
  144. urban roads
  145. urban sociology
  146. urban speech USE non-literary language formations
  147. urban transport
  148. urban transport system
  149. urban underground transport
  150. urban waste water
  151. urban waste water treatment plants
  152. urbanistic anthropology USE urban anthropology
  153. urbanistic elements
  154. urbanization
  155. ureaformaldehyde resins
  156. urethans
  157. urinary anti-infective agents USE drugs (medicine)
  158. urinary calculi USE urinary tract diseases
  159. urinary system
  160. urinary tract diseases
  161. urine
  162. urogenital neoplasms USE urologic diseases
  163. urogenital surgery
  164. urogenital system
  165. urogenital tuberculosis USE eye diseases
  166. urologic diseases
  167. urology
  168. uronic acids USE monosaccharides
  169. Ursulines USE female orders
  170. usage
  171. use of robots in transport USE transport mechanisation
  172. used cars sales
  173. useful insects
  174. user friendly programs
  175. user instruction
  176. usury
  177. utilisable polysaccharides
  178. utilised waste USE recycling of wastes
  179. utilitarian morality
  180. utilities
  181. utility animals
  182. utility function
  183. utility glassware
  184. utility nets
  185. utility plants
  186. utilization
  187. utilization of sewage sludge
  188. utilizing boilers
  189. UV radiation USE ultraviolet radiation
  190. UV spectrophotometry USE ultraviolet spectrophotometry