00238nam a22000977a 4500003000400000008004100004082001800045245003900063260003000102300000800132OSt240214b        |||||||| |||| 00| 0 eng d  aP631.405bS60  aSoil Sci. Soc. America J. - Vol.45  aMadisonbS. S. S. Ac1981  a1-6