00431nam a2200157Ia 4500008004100000082001600041100002000057245002600077250000600103260004600109300000800155650004100163650003400204653001600238653001900254170901s1959    xx            000 0 und d  a631.8bB36S  aBear, Firman E. 0aSoils and fertilizers  a4  aNew YorkbJohn Wiley and Sons, Inc.c1959  a420  aAgriculture and related technologies  aTechnology (Applied sciences)  aFertilizers  aSoil fertility