00304nam a22001097a 4500003000400000008004100004082001700045100002600062245005000088260004800138300000800186OSt231214b        |||||||| |||| 00| 0 eng d  a631.405bP86  aAmerican Org. Commtt.  aIst International Congress Soil Sc. (Proceed)  aAmerican Org. Commtt.bC.S.R.S., Pusac1928  a706