00360nam a2200121Ia 4500008004100000082002300041100001900064245005900083260002300142300001300165600001800178650004200196140224s9999    xx            000 0 und d  a631.417' 811.2. M7  aHarrison, A.F.  aSoil organic phosphorus; a review of world literature.  aOxonbC.A.B.c1987  aix,257p.  aA.F. Harrison  aPhosphorus,Fertilizers,Soil Chemistry