UDC 681.7 Optical apparatus and instruments and AMD 2710:1975 BS 1000(681.7):1975

Eitemau Tebyg

• BS1000[6817]: 1975, /
  gan: British Standards Institution
  Cyhoeddwyd: (1975)
• UDC 681.5 Automatic control engineering and AMD 1000(681.5): 1976
  gan: B S I
  Cyhoeddwyd: (1976)
• UDC 681.6 Graphic reproduction machines and equipment BS 1000(681.6): 1971
  gan: B S I
  Cyhoeddwyd: (1971)
• BS1000[681.8/9]: 1972 /
  gan: British Standards Institution
  Cyhoeddwyd: (1972)
• UDC 68/681.4 Finished articles in general precision mechanisms. Horology instrumentation Data processing. Optical apparatus and AMD 1739:72 BS 1000(68/681.4):1972
  gan: B S I
  Cyhoeddwyd: (1972)