50 C.F.R. § 25.42 Permits required to be exhibited on request.
Title 50 - Wildlife and Fisheries
Any person on a national wildlife refuge shall upon request by any authorized official exhibit the required Federal or State permit or license authorizing their presence and activity on the area and shall furnish such other information for identification purposes as may be requested.
Title 50: Wildlife and Fisheries
PART 25—ADMINISTRATIVE PROVISIONS
Subpart D—Permits
§ 25.42 Permits required to be exhibited on request.