Jensen, H. (1961). Statistical studies on the IGY microseisms from København and Nord: With a summary in Danish. [Printed by B. Lunos].
Chicago-referens (17:e uppl.)Jensen, Henry. Statistical Studies on the IGY Microseisms from København and Nord: With a Summary in Danish. København: [Printed by B. Lunos], 1961.
MLA-referens (8:e uppl.)Jensen, Henry. Statistical Studies on the IGY Microseisms from København and Nord: With a Summary in Danish. [Printed by B. Lunos], 1961.
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