regulation(The act of regulating; a rule or order prescribed for management or government; a regulating principle; a precept. Rule of order prescribed by superior or competent authority relating to action on those under its control)
customs regulation(A body of rules or orders generally issued by the executive authority of a government to establish and direct the taxes, duties or tariffs payable upon merchandise exported or imported)
pollution control regulation(A body of rules or orders prescribed by government, management or an international organization or treaty in which limits are established for the emission of substances that harm or adversely alter the environment and human health)
environmental protection regulation(A government or management prescribed rule for the preservation of natural resources and the prevention of damage or degradation of the ecosystem)