00277nam a2200109Ia 450000500170000000800410001708200140005810000160007224500290008826000420011730000080015920260224040952.0260224s9999||||xx |||||||||||||| ||und||  a581.1 KOC  aKoch, W.J.  0aPlant in the laboratory   aLondon: Paris : Pergamon Press,c1964  a407