00481nam a2200169Ia 4500008004100000020001500041082001700056100001600073245006500089260004200154300000800196650002300204650001800227653001900245653002100264700002600285170901s1981    xx            000 0 und d  a9022007308  a582.13bG25T  aGeesink, R. 0aThonner's analytical key to the families of Flowering Plants  aLondonbLeiden University Pressc1981  a231  aBotanical sciences  aPure Sciences  aClassification  aFlowering plants  aLeenwenberg, A. J. M.