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OCR-text (abbyy)

Heiskanen, W/eikko Aleksanteri/, & Niskanen,
Erkki
World maps for the indirect effect of the
undulations of the geoid on gravity anomalies.
8:o Helsinki 1941.
=Annales Academia? scientiarum fennica? . Ser.
A. T. 57:^.
^^ ^^^^^ ^^
OCR-text (abbyy-crop)
Heiskanen, W/eikko Aleksanteri/, & Niskanen,
Erkki
World maps for the indirect effect of the
undulations of the geoid on gravity anomalies.
8:o Helsinki 1941.
=Annales Academiæ scientiarum fennicæ . Ser.
A. T. 57:4.	22e2a
[al"AE„&A-
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