00348nam a2200133 a 450000500170000000800410001704100080005808200100006610000210007624500400009726400470013730000100018465000200019420260717090929.0260717s1969    ii            000 0 eng d  aeng04a581.51 aScott, George D.10aPlant symbiosis /cScott, George D. 1aLondon :bEdward Arnold Publishers,c1969.  a57 p. 4aPlant symbiosis