Citation: Averbuch-Pouchot, M T; Durif, A (1983). Crystal Chemistry of M(II) Ag (P O~3~)~3~ Polyphosphates for M(II) = Zn,Co,Ni,Mg and M(II)~4~ Na~4~ (P~4~ O~12~)~3~ Tetrametaphosphates for M(II)=Zn,Co,Ni: Crystal Structures of Zn Ag (P O~3~)~3~ and Zn~4~ Na~4~ (P~4~ O~12~)~3~. Journal of Solid State Chemistry, 49, pp. 341-352.