Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Douglas Helms"'
Publikováno v:
Encyclopedia of Soil Science, Third Edition ISBN: 9781315161860
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::827d258d078e8954330c320acb9775dc
https://doi.org/10.1081/e-ess3-120042708
https://doi.org/10.1081/e-ess3-120042708
Autor:
Douglas Helms
Publikováno v:
Agricultural History. 92:124
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3d4a7543f544bd8c94273fa7fe7bc87
https://doi.org/10.3098/ah.2018.092.1.124
https://doi.org/10.3098/ah.2018.092.1.124
Autor:
Douglas Helms
Publikováno v:
Journal of Soil and Water Conservation. 64:68A-74A
This article is a continuation of the historical developments discussed in “Hugh Hammond Bennett and the creation of the Soil Erosion Service,” Journal of Soil and Water Conservation , Volume 64, Number 2, pages 68A-74A. The article discusses the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d0337d84e9e80a78ec6de08e26e55f8
https://doi.org/10.2489/jswc.64.2.68a
https://doi.org/10.2489/jswc.64.2.68a
Autor:
J. Douglas Helms
Publikováno v:
Agricultural History. 78:497-504
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2032ec9057e1f38b2d607b9fe1117e5d
https://doi.org/10.1215/00021482-78.4.497
https://doi.org/10.1215/00021482-78.4.497
Publikováno v:
Agricultural History. 76:289-307
Water-quality considerations are, and historically have been, integral to soil conservation, not separate from it. In establishing the Soil Conservation Service (SCS), Congress directed the new organization to carry out a continuing program of soil a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b14f8bf7227352c321adfbb677951b31
https://doi.org/10.1215/00021482-76.2.289
https://doi.org/10.1215/00021482-76.2.289
Autor:
Douglas Helms
Publikováno v:
Agricultural History. 74:723-758
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37359e812cf39c1ec2418c4241c24494
https://doi.org/10.1215/00021482-74.4.723
https://doi.org/10.1215/00021482-74.4.723
Autor:
Douglas Helms
Publikováno v:
Agricultural History. 82:263-265
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf9a847228e49a22ccd500c8a9cfa0ff
https://doi.org/10.1215/00021482-82.2.263
https://doi.org/10.1215/00021482-82.2.263
Autor:
J. Douglas Helms
Publikováno v:
Agricultural History. 81:138-140
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c06fe1a7fda06fbdddfabc932ea79a2
https://doi.org/10.1215/00021482-81.1.138
https://doi.org/10.1215/00021482-81.1.138
Autor:
Douglas Helms
Publikováno v:
Agricultural History. 78:123-125
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3293d33cb0669074b54b7f070037945
https://doi.org/10.1525/ah.2004.78.1.123
https://doi.org/10.1525/ah.2004.78.1.123
Autor:
Douglas Helms
Publikováno v:
Agricultural History. 78:123-125
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0c7e15fa1a4a7b72702785bd613ef14
https://doi.org/10.1215/00021482-78.1.123
https://doi.org/10.1215/00021482-78.1.123