GB/T 11957-1989

Determination of yield of humic acids in coal

STANDARD published on 1.1.1989

English, Chinese -
electronic design (pdf) (298.80 USD)

The information about the standard:

Designation standards: GB/T 11957-1989
Note: WITHDRAWN
Publication date standards: 1.1.1989
Country: Chinese technical standard
Category: Technical standards GB