| نقل قول | Cocanour, B. and K. Allen, 1967 The breeding cycles of a sand dollar and a sea urchin. Comp. Biochem. Physiol. 20:327-331. |
| مرجع | 107056 Cocanour, B. and K. Allen, 1967 |
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| Named Used as Valid | Strongylocentrotus droebachiensis |
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