| Citation | Higgins, R.C. 1974 Specific status of Echinocardium cordatum, E. australe and E. zealandicum (Echinoidea: Spatangoida) around New Zealand, with comments on the relation of morphological variation to environment. Journal of Zoology 173(4)451-475. |
| DOI / ISBN | |
| Paper URL | http://onlinelibrary.wiley.com/doi/10.1111/j.1469-7998.1974.tb04127.x/abstract |
| Ref. No. | 105718 |
| Language | English |
| Usage | not seen |
| Remarks | |
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