A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
E. S. Crawford, J. S. Anderson. "Homogeneous Solid State Transformations in Niobium Oxides." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 304.1485 (1982) 327-364