The porifera of the Siboga expedition : Part. 2. The genus spirastrella /
Vosmaer, G. C. J.
The porifera of the Siboga expedition : Part. 2. The genus spirastrella / by G. C. J. Vosmaer. - Leyden : E.J. Brill, 1911. - 69 p. : ill. ; 33 cm. - Siboga-Expeditie ; 6a.1, livr. 59. .
The porifera of the Siboga expedition : Part. 2. The genus spirastrella / by G. C. J. Vosmaer. - Leyden : E.J. Brill, 1911. - 69 p. : ill. ; 33 cm. - Siboga-Expeditie ; 6a.1, livr. 59. .