00403nam a2200133Ia 4500008004100000041000800041082001500049100002800064245008400092260004800176300002100224563000700245650001700252210707s1965 xx 000 0 und d aeng a631.4 BLAM aBLACK (C A) and others. aMethods of soil analysis. Part 1and 2. Chemical and microbiological properties. aU S A.bAmerican Society of Agronomy.c1965 axlii,1572,lxii p aHB aSoil Science