00284nam a2200097Ia 4500008004100000082002400041100002500065245004500090260004300135300000800178140113s9999    xx            000 0 und d  a631.45:631.811   K9  a"Chapman, Homer.D. "  aDiagnostic criteria for plants and soils  a1969bUniversity of CaliforniacU.S.A.  a793