00366nam a2200145 a 450000100080000000500110000800800410001910000240006024500460008426000430013030000100017350000190018365000090020265300090021118415891995-12-18       1975    bl uuuu  m   00u1 u    #d1 aABDEL-HAFFEZ, M. E.  aChemical fractionation of soil magnesium.  aMadison: University of Wisconsinc1975  a66 p.  aThesis Master.  aSolo  aTese