50 CFR 217.87 - Letters of Authorization.
(a) A Letter of Authorization, unless suspended or revoked, shall be valid for a period of time not to exceed the period of validity of this subpart.
(2) Means of effecting the least practicable adverse impact on the species, its habitat, and on the availability of the species for subsistence uses (i.e., mitigation); and
Title 50 published on 2014-10-01
no entries appear in the Federal Register after this date.