106 resultados para Seed collecting
em University of Michigan
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Mode of access: Internet.
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Mode of access: Internet.
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Because the use of filters to sample particulate matter suspended in the upper atmosphere has been investigated and has yielded rather disappointing results, an examination of other methods of upper atmospheric sampling is desirable, and this is the aim of the present report. The nature of any radioactive material, and its relation to the size and composition of the suspended particles is of particular interest.
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Format not distributed to depository libraries.
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Includes index.
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Federal Highway Administration, Washington, D.C.
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Bibliography: p.45.
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"This editon is limited to 500 numbered copies"--T.p. verso of each part.
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Advertisement: 1 p. (at end).