The thickness of (he film of a soapbubble is the 2,500,000 th part of an inch. Artificial fogs are being used in Norway to protect crops from frost.
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Bibliographic details
Otago Witness, Issue 3774, 13 July 1926, Page 61
Word Count
28Page 61 Advertisements Column 1 Otago Witness, Issue 3774, 13 July 1926, Page 61
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