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January 1, 1941

The limnological role of the higher plants

No abstract available.

Authors

N. Hotchkiss

Ecosystems Mission Area, Eastern Ecological Science Center

January 1, 1939

Ridge-making thin sandstone in Frederick County, Virginia: Chapter C

It is generally recognized that massive thick-bedded sandstones and relatively weak shales and soluble limestones form characteristic surface features. The uncommon effect of a thin argillaceous sandstone in producing ridges in an area in northern Virginia, in which the writer has recently done detailed field work, is briefly described in this paper. This bed, with an average thickness of 2 feet,

Authors

R.S. Edmundson

Virginia and West Virginia Water Science Center

January 1, 1928