924 resultados para pathogenic indicators
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Bibliography: p. 78-83.
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Mode of access: Internet.
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Title from cover.
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Mode of access: Internet.
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Mode of access: Internet.
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"Some reference books likely to be useful to students in this course": p. xi.
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Manifold copy (photo-litho offset)
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Mode of access: Internet.
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"Materials Laboratory, Contract No. AF33(616)-3879, Project No. 7312."
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Fifth annual report of the National Science Board.
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"Ninth annual report of the National Science Board."
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AD 619 423. Translation no. 1425. Translated from Zhurnal Mikrobiologii, Epidemiologii i Immunobiologii v. 6, 1964. pp. 12-17.
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Mode of access: Internet.
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"ECIFS."
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Field work: Oct. 1971-Jan. 1972.