كتب ذات صلة

The ventriculidae of the chalk: their microscopic structure, affinities and classification.

A Middle Devonian octactinellid sponge from New York

A memoir on the Palaeozoic reticulate sponges constituting the family Dictyospongidae

Fossil sponge spicules from the upper chalk found in the interior of a single flint-stone from Horstead in Norfolk

• Dendrites and batrachians and reptiles of Nova Scotia
  المؤلفون: MacKay, A. H.
• Marine algae of New Brunswick
  المؤلفون: MacKay, A. H. ,  Hay, G. U.
• New fresh-water sponges from Nova Scotia and Newfoundland
  المؤلفون: MacKay, A. H.

• Science on stage 1 & 2 : demonstrations & teaching ideas
  
• Physics on stage 3 : demonstrations & teaching ideas
  
• Specimens of Arabian poetry
  المؤلفون: Carlyle, Joseph Dacre