الموضوعات المستخلصة من بحثك.
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3
بواسطة Harrington, Virginia
[Beltsville, Md.] : Dept. of Agriculture, Agricultural Research Service, [Northeastern Region], Plant Protection Institute, 1977
[Beltsville, Md.] : Dept. of Agriculture, Agricultural Research Service, [Northeastern Region], Plant Protection Institute, 1977
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كتاب
4
Washington, For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1970
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بواسطة Kenton, Charlotte
[Bethesda, Md.] : U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, 1983
[Bethesda, Md.] : U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, 1983
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كتاب
7
بواسطة Lier, Ruth
Los Alamos, New Mexico : Los Alamos Scientific Laboratory of the University of California, 1960
Los Alamos, New Mexico : Los Alamos Scientific Laboratory of the University of California, 1960
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كتاب
8
بواسطة Kenton, Charlotte
Bethesda, Md. : U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, 1982
Bethesda, Md. : U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, 1982
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كتاب
9
بواسطة Jones, Milbrey L., 1928-
Washington, Office of Education, U.S. Dept. of Health, Education, and Welfare; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1967
Washington, Office of Education, U.S. Dept. of Health, Education, and Welfare; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1967
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11
Washington : Springfield, Va. : Dept. of the Interior, Office of Water Research and Technology, Water Resources Information Center ; for sale by the National Technical Information Service, 1977
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12
بواسطة Segal, Pesach
Bethesda, Md. : U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, 1983
Bethesda, Md. : U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, 1983
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كتاب
13
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بواسطة Ashby, Charlotte M. (Charlotte Munchmeyer)
Washington : U.S. Environmental Data Service, 1975
Washington : U.S. Environmental Data Service, 1975
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15
بواسطة Hubbell, J. H.
Gaithersburg, Maryland : United States Department of Commerce, National Institute of Standards and Technology, 1986
Gaithersburg, Maryland : United States Department of Commerce, National Institute of Standards and Technology, 1986
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17
Washington : Springfield, Va. : Dept. of Transportation, Federal Railroad Administration, Office of Rail Safety Research ; for sale by the National Technical Information Service, 1976
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19
بواسطة Walker, Deborah Klein
Washington : U.S. Dept. of Health, Education, and Welfare, Office of the Assistant Secretary of Planning and Evaluation, Office of Social Services and Human Development, 1975
Washington : U.S. Dept. of Health, Education, and Welfare, Office of the Assistant Secretary of Planning and Evaluation, Office of Social Services and Human Development, 1975
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