Pamphlets on Conservation of Natural Resources, Volumen18U.S. Government Printing Office, 1909 |
Dentro del libro
Resultados 1-5 de 100
Página 241
... land than on land under dense vegetative cover . During March 1-19 , 1936 , 9.5 inches of rain fell in Ithaca , New York . The results at the experiment station on three plots of land were as follows : Cover Percent of Slope Soil Loss ...
... land than on land under dense vegetative cover . During March 1-19 , 1936 , 9.5 inches of rain fell in Ithaca , New York . The results at the experiment station on three plots of land were as follows : Cover Percent of Slope Soil Loss ...
Página 248
... Land , and People . New York , A. A. Knopf , 1950. 331 pp . Water- and land - use problems popularly described and a number of solutions proposed . See chapter 9 . U. S. Department of Agriculture . The Yearbook of Agriculture 1955 ...
... Land , and People . New York , A. A. Knopf , 1950. 331 pp . Water- and land - use problems popularly described and a number of solutions proposed . See chapter 9 . U. S. Department of Agriculture . The Yearbook of Agriculture 1955 ...
Página 250
... land to take care of us if we take care of the land from now on , but we do not have any too much . " During the nineteen years since Mr. Bennett issued that statement , the U. S. has added 37,000,000 citizens to its population . The ...
... land to take care of us if we take care of the land from now on , but we do not have any too much . " During the nineteen years since Mr. Bennett issued that statement , the U. S. has added 37,000,000 citizens to its population . The ...
Página 251
Soil erosion is a natural process ; it occurs over most of the land sur- face of the earth all the time , but except for man's influence , erosion ordinarily takes place on cultivatable land so slowly that new soil , which is also ...
Soil erosion is a natural process ; it occurs over most of the land sur- face of the earth all the time , but except for man's influence , erosion ordinarily takes place on cultivatable land so slowly that new soil , which is also ...
Página 252
... land . READING LIST Robert C. Sherman . Life and Death of the Soil . Chicago , Science Research Asso- ciates , 1955. 48 pp . An excellent primer in soil science . A land classification study of the entire U.S.A. , though still ...
... land . READING LIST Robert C. Sherman . Life and Death of the Soil . Chicago , Science Research Asso- ciates , 1955. 48 pp . An excellent primer in soil science . A land classification study of the entire U.S.A. , though still ...
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Términos y frases comunes
acres agencies Agriculture annual areas bill boys Bureau CAGNEY camp Chairman Civilian Conservation Corps Commission committee Congress conservation movement Construction cooperation coordination cost Council delinquency Department Douglas-fir economic enrollees existing facilities Federal Government fire Forest Fire forest land FOREST PROTECTION Forest Service forestry Gifford Pinchot Governor habitat important improvements increase industry Insect and Disease interest Interior January 26 juvenile Kalamazoo River labor legislation Maintenance Management and administration ment miles million acres mineral national forests national-forest natural resources organization parks percent plans planting population present President problems production proposed recommendations recreation Reforestation regional resource development Resource Management Resources and Conservation responsibility river roads and trails Senator CLARK Senator Humphrey SENATOR MURRAY Senator RANDOLPH Silviculture statement streams surveys Theodore Roosevelt Timber purchasers tion U.S. Senate United utilization Washington watershed welfare wildlife young Youth Conservation Corps