title: Surface areas by gas adsorption on amorphous calcium phosphate and crystalline hydroxyapatite.
mesh_terms: D000042:Absorption; D000327:Adsorption; D002130:Calcium Phosphates; D003460:Crystallization; D005740:Gases; D006882:Hydroxyapatites; D009584:Nitrogen; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors; D014867:Water; D014961:X-Ray Diffraction
chemical_list: D002130:Calcium Phosphates; D005740:Gases; D006882:Hydroxyapatites; C519480:amorphous calcium phosphate; D014867:Water; D009584:Nitrogen