GOST PDF
GOST 20997.2-81
Thallium. Method of the spectral determination of aluminium, iron, copper, nickel, tin, silver and lead
Document status: Active
€10
GOST 20997.4-81
Thallium. Method of chemical and spectral determination of aluminium, iron, bismuth, cadmium, indium, manganese, nickel, lead, silver and zinc
Document status: Active
€10
GOST 21.002-81
System of design documents for construction. Normocontrol of design-estimate documentation
Document status: Withdrawn
€10