Determination of niobium content in bastnaesite concentrates

WITHDRAWN published on 1.1.1981

Determination of silicon dioxide content in bastnaesite concentrates

WITHDRAWN published on 1.1.1981

Determination of calcium oxide content in bastnaesite concentrates

WITHDRAWN published on 1.1.1981

Determination of thorium dioxide content in bastnaesite concentrates

WITHDRAWN published on 1.1.1981

Determination of barium content in bastnaesite concentrates

WITHDRAWN published on 1.1.1981

Determination of fluorine content in bastnaesite concentrates

WITHDRAWN published on 1.1.1981

Determination of phosphorus pentoxide content in bastnaesite concentrates

WITHDRAWN published on 1.1.1981

Information technology—Traditional Mongolian nominal characters,presentation characters and use rules of controlling characters

WITHDRAWN published on 10.1.2011

Cleanrooms and associated controlled environments—Part 1:Classification of air cleanliness

WITHDRAWN published on 14.1.2011

Cleanrooms and associated controlled environments—Part 2:Specifications for testing and monitoring to prove continued compliance with GB/T 25915.1

WITHDRAWN published on 14.1.2011