| Citation | Higgins, R.C. 1975 Observations on the morphology of Echinocardium cordatum (Echinoidea: Spatangoida) from diverse geographical areas. Journal of Zoology 177(4):507-515. |
| DOI / ISBN | |
| Paper URL | http://onlinelibrary.wiley.com/doi/10.1111/j.1469-7998.1975.tb02255.x/abstract |
| Ref. No. | 105723 |
| Language | English |
| Usage | not seen |
| Remarks | |
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