Humphrey, E. (1975). Encyclopedia International: V.6.: Diatom - Explosion. Grolier Inc.
Chicago Style aipamenaHumphrey, Edward. Encyclopedia International: V.6.: Diatom - Explosion. Grolier Inc, 1975.
MLA aipamenaHumphrey, Edward. Encyclopedia International: V.6.: Diatom - Explosion. Grolier Inc, 1975.
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