Article PDF
Rights and permissions
About this article
Cite this article
The Macaulay Institute for Soil Research. Nature 199, 746 (1963). https://doi.org/10.1038/199746b0
Issue Date:
DOI: https://doi.org/10.1038/199746b0
Nature volume 199, page 746 (1963)
The Macaulay Institute for Soil Research. Nature 199, 746 (1963). https://doi.org/10.1038/199746b0
Issue Date:
DOI: https://doi.org/10.1038/199746b0