2015GB/T 20001.4-2015 Rules for drafting standards.Part 4:Test method standards
2001GB/T 20001.4-2001 Rules for drafting standards--Part 4: Methods of chemical analysis
1998GB/T 1.4-1988 Standardization Work Guidelines Chemical Analysis Method Standard Compilation Provisions
GB/T 1.4-1988 Standardization Work Guidelines Chemical Analysis Method Standard Compilation Provisions was changed to GB/T 20001.4-2001 Rules for drafting standards--Part 4: Methods of chemical analysis.