by Robert Louis Hulbary
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A needle blight of Austrian pine
An analysis of the wood of the three com...
The morphology of Elodea canadensis ..
The release of sediment phosphorus from ...
Über den Einfluss verschiedener Substanz...
A long-stalked Elodea flower
Einige stoffliche Einflüsse auf die Kohl...
Responses of Elodea densa to growth-regu...