00349nam a2200121 a 450000500170000008200130001710000280003024500690005826000340012730000100016149000370017150000190020820251203090658.0  a577bCON  aBarrett, James T.comp.,  aContemporary classics in plant,animal and environmental sciences  aPhiladelphiabISI Pressc1986  a371p.  aContemporary classics in science  aincludes index