00278nam a2200097Ia 4500008004100000082001800041100003400059245004800093260003100141300000800172140113s9999    xx            000 0 und d  a58.006.2   K6  a"Purvis, M.J. & Collier,D.C."  aLaboratory techniques in botany 2nd edition  a1966bButterworthscLondon  a439