Chapter L

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Laccoliths 37
Lake development 34, 39
Lance Formation 11
Laramie Formation 16
Lava flows 37
Lewis and Clark expedition 2
Limestone Plateau 21, 22
Limon, Colo. 4, 43
Little Basin, Kans. 48
Little Belt Mountains 36
Little Missouri River 33, 35, 38, 40
Little Rocky Mountains 33, 36
Littlefield, Tex. 30
Llano Estacado 29, 30
Loess 29
Longhorn Caverns 23