"Southwestern States." . . "Wildlife habitat improvement Southwestern States." . . "Sand and gravel industry." . . "Wildlife habitat improvement." . . "United States" . . "Sand and gravel industry Environmental aspects Southwestern States." . . "Reclamation of land Southwestern States." . . . . . . . . . . . . . . . . "Sand and gravel pits as fish and wildlife habitat in the Southwest"@en . "Sand and gravel pits as fish and wildlife habitat in the Southwest" . . . . . . . . . . . "Sand and Gravel Pits as Fish and Wildlife Habitat in the Southwest"@en . . . . . . . . . . . . . . . . . . "Riparian ecology." . . "Reclamation of land." . . "Environmental aspects." . . "Reclamation of lands." . . "Riparian ecology Southwestern States." . . "Sand and gravel industry Environmental aspects." . .