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The genus Hystrichosphaeridium and its allies
Davey, R.J. and Williams, G.L.
1966b
Bull. Brit. Mus. (Nat. Hist.) Geol., Suppl. vol.3 pp.53-106
The genus Hystrichosphaeridium and its allies

Davey, R.J. and Williams, G.L., 1966; The genus Hystrichosphaeridium and its allies. Bull. Brit. Mus. (Nat. Hist.) Geol., Suppl. vol.3 pp.53-106
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