19 resultados para aquatic humic substances

Defensive ferments of the animal organism against substances out of harmony with the body, the blood-plasma and the cells; their demonstration, and their diagnostic significance for testing the functions of different organs, by Emil Abderhalden.

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Leçons sur les effets des substances toxiques et medicamenteuses / par M. Claude Bernard.

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May flies and midges of New York. Third report on aquatic insects. A study conducted at the entomologic field station, Ithaca, N.Y., under the direction of Ephraim Porter Felt. By James G. Needham, Kenneth J. Morton [and] O.A. Johannsen.

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The natural history of aquatic insects / by L.C. Miall ; with ilustrations by A.R. Hammond.

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A new genus of aquatic rodents from Abyssinia, by Wilfred H. Osgood.

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v.12:no.15(1928)

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A contribution to the taxonomy of aquatic and humicolous beetles of the family Hydraenidae in southern Africa / Philip D. Perkins, J. Balfour-Browne.

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n.s. no.77(1994)

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Energy and environmental stress in aquatic systems : selected papers from a symposium held at Augusta, Georgia, November 2-4, 1977 /

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Aquatic dryopoid beetles (Coleoptera) of the United States, by Harley P. Brown.

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Glossary of aquatic ecological terms / compiled by John E. Matthews.

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Aquatic and wetland plants of southwestern United States, by Donovan S. Correll and Helen B. Correll.

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The principles of pharmacognosy :an introduction to the study of the crude substances of the vegetable kingdom /by Friedrich A. Flückiger and Alexander Tschirch; tr. from the 2d and completely rev. German ed. by Frederick B. Power.

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A guide to the study of fresh-water biology, with special reference to aquatic insects and other invertebrate animals and phyto-plankton, by James G. Needham and Paul R. Needham.

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Proceedings of the third USA-USSR symposium on the effects of pollutants upon aquatic ecosystems.

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3rd.

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A guide and key to the aquatic plants of the Southeastern United States, by Don E. Eyles and Lynne Robertson, Jr. With original drawings by Garnet W. Jex.

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Proceedings of the third USA-USSR symposium on the effects of pollutants upon aquatic ecosystems.

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1st & 2nd

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