00477nam a2200157Ia 4500008004100000020001500041082001600056100001800072245009800090260004600188300000800234650002300242650001800265653001800283700001800301170901s1968    xx            000 0 und d  a0045810036  a581.5bM50P  aMcLean, R. C. 0aPractical Field EcologybA Guid for the Botany Department of Universites, College and Schools  aLondonbGeorge Allen and Unwin Ltd.c1968  a215  aBotanical sciences  aPure Sciences  aPlant Ecology  aIvimey, W. R.