Dingell Johnson Pittman Robertson acts : hearings before the Subcommittee on Fisheries and Wildlife Conservation and the Environment of the Committee on Merchant Marine and Fisheries, House of Representatives, Ninety seventh Congress, first session, on Dingell Johnson Act Amendments H.R. 2250, July 8, 1981, Pittman Robertson Act Amendments H.R. 3429, July 30, 1981.

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