This is a preview of subscription content, log in via an institution to check access.
Rights and permissions
About this article
Cite this article
Dr. J. de Graaff-Hunter CIE, ScD, FRS. Bull. Geodesique 84, 83–84 (1967). https://doi.org/10.1007/BF02527654
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02527654