Abstract
THE writer has had the privilege of seeing the original draft of Mr. Clark's letter to NATURE with reference to “international co-operation in phenological observations,” and he is heartily in sympathy with the ideas covered in this initial movement towards the extension of the service to world interests in agriculture through observations and research in this relatively unrecognised branch of natural science.
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References
Suppl. No. 9, Mon. Weather Rev., U.S. Dept. Agric. Weather Bureau, 1918.
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HOPKINS, A. Notes on the Bioclimatic Law. Nature 114, 608–609 (1924). https://doi.org/10.1038/114608a0
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DOI: https://doi.org/10.1038/114608a0
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