79 resultados para Aquatic humic substance
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Mode of access: Internet.
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Mode of access: Internet.
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Title vignette.
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Cover title: Alcoholism and substance abuse, trends and choices.
A classification of the larvae and puparia of the Syrphidae of Illinois, exclusive of aquatic forms.
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Issued also as thesis (PH.D.) University of Illinois.
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"August 1978."
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Sponsored by NOAA/National Ocean Service, National Marine Pollution Program Office.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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With this is bound Heathfield, R. Further observations on the practicability and expediency of liquidating the public debt of the United Kingdom. 1820.
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Includes tables.
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Mode of access: Internet.
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Mode of access: Internet.