Groentved, J. (1950). Phytoplankton Studies. 1.
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Dyfyniad Arddull Chicago
Groentved, Jul. Phytoplankton Studies. 1. København, 1950.
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Dyfyniad MLA
Groentved, Jul. Phytoplankton Studies. 1. 1950.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.