The earliest English chart with soundings:
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Bibliographic Details
Main Authors: De Boer, G. (Author), Skelton, R. A. 1906-1970 (Author)
Format: Article
Language:English
Published: 1969
Subjects:
Physical Description:Kt.
ISSN:0308-5694

There is no print copy available.

Interlibrary loan Place Request Caution: Not in THWS collection!