UDC 5/50 Exact sciences in general. National study conservation BS 1000(5/50): 1974

Eitemau Tebyg

• UDC 368 Insurance BS 1000 (368): 1971
  gan: BSI under the auspices of FID
  Cyhoeddwyd: (1971)
• UDC 39. Ethnology Ethnography BS 1000 (39): 1970
  gan: BSI under the auspices of FID
  Cyhoeddwyd: (1970)
• UDC 37 Education teaching training, Leisure BS 1000 (37) : 1975
  gan: BSI under the auspices of FID
  Cyhoeddwyd: (1975)
• UDC 38/382 Trade commerce BS 1000 (38/382):1969
  gan: BSI under the auspices of FID
  Cyhoeddwyd: (1969)
• UDC 51 Mathematics BS 1000 (51) 1976 AMD 3697: 1976
  gan: BSI under the auspices of FID
  Cyhoeddwyd: (1976)