Pesquisa de referências

The HSE/NPL phase-contrast test slide

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      <subfield code="a">The HSE/NPL phase-contrast test slide</subfield>
      <subfield code="c">J.M.M. Le Guen... [et al.]</subfield>
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      <subfield code="a">The slide provides a means of checking the detection limit of phase-contrast microscopes and is intented primarly for use with the membrane filter method of measuring airborne asbestos fibres. The test objects on the Mark II version (HSE/NPL), which is commercially available, are sets of ridges of resin, mounted on a conventional microscope slide, and immersed in a second resin of slightly lower refractive index</subfield>
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      <subfield code="a">The Annals of occupational hygiene</subfield>
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      <subfield code="t">The Annals of occupational hygiene</subfield>
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      <subfield code="g">nº 2, 1984 ; p. 237-247</subfield>
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