Title: 31P-MAS-NMR STUDIES ON CRYSTALLINE AND VITREOUS POLYMORPHS OF PHOSPHORUS PENTOXIDE P2O5 Author(s): GRIMMER, AR; WOLF, GU Source: EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY Volume: 28 Issue: 1 Pages: 221-232 Published: 1991 x********[email protected] thanks a lot!