Phylogeny of the Echini, with a revision of Palaeozoic species
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| Description | Boston, The Society, 1912. |
| Author/s |
author: Robert Tracy Jackson |
| Publication date | 1912 |
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| Copyright status |
public domain in countries with 70 years pma or shorter. public domain in United States. |
| Missing/wrong data? | Edit Wikidata item |