A revision of the classification of the calcareous sponges : with a catalogue of the specimens in the British Museum (Natural History)
London, Printed by order of the trustees of the British Museum (Natural History), 1963
Natural History Museum Library, London
Errata inserted on contents page: Page v. Against 'III A Systematic…' amend '152' to read '151' Page 314. In text-figure caption amend page reference '309' to read '308'