Hexactinellida /
Burton, Maurice.
Hexactinellida / by Maurice Burton. - Copenhagen : printed by Bianco Luno, 1928. - 18 p. : ill. ; 32 cm. - The Danish-Ingolf Expedition ; 6.4 .
Hexactinellida / by Maurice Burton. - Copenhagen : printed by Bianco Luno, 1928. - 18 p. : ill. ; 32 cm. - The Danish-Ingolf Expedition ; 6.4 .