TY - RPRT TI - X-ray crystallographic and tungsten-183 nuclear magnetic resonance structural studies of the [M4(H2O)2(XW9O34) 2]10- heteropolyanions (M = COII or Zn, X = P or As) AU - H. T. Evans AU - C.M. Tourne AU - G.F. Tourne AU - T.J.R. Weakley PY - 1986 DO - 10.1039/dt9860002699 UR - https://pubs.usgs.gov/publication/70014619 ID - 70014619 ER -