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Geological Survey research 1970, Chapter B
Water Resources Division, U.S. Geological Survey
1970, Professional Paper 700-B
This collection of 46 short papers is the first published chapter of "Geological Survey Research 1970." The papers report on scientific and economic results of current work by members of the Geologic and Water Resources Divisions of the U.S. Geological Survey. Chapter A, to be published later in the...
Common marsh plants of the United States and Canada
Neil Hotchkiss
1970, Resource Publication 93
This is the fourth of a series of publications on field identification of North American marsh and water plants. It describes the emergent and semiemergent plants most likely to be found in inland and coastal marshes. It omits hundreds of uncommon marsh plants and plants less characteristic of marshes than...
Geological Survey research 1970, Chapter D
Water Resources Division, U.S. Geological Survey
1970, Professional Paper 700-D
This collection of 45 short papers is the third published chapter of "Geological Survey Research 1970." The papers report on scientific and economic results of current work by members of the Geologic, Water Resources, and Topographic Divisions of the U.S. Geological Survey.Chapter A, to be published later in the year,...
About nutria and their control
James Evans
1970, Resource Publication 86
Wild animals are generally classed as beneficial or pest species, depending on the variable interests of man. Those that provide him with earnings, recreation, or enjoyment are considered beneficial; those that compete with him for food, or ruin his possessions or environment, are quickly dubbed pests. But all men do...