00290nam a2200097Ia 4500008004100000082002500041100002100066245007400087260002300161300000800184140113s9999    xx            000 0 und d  a631.427.3:543.42  M8  a"Mitchell, R.L."  a"The Spectrachemical analysis of soils, plants and related materials"  a1964bCABcEngland  a225