00421nam a2200169   450000500170000000700040001700800040002104000090002505000200003410000170005424500370007125000120010826000520012030000230017250000360019565000200023120250506161110.0000000  aUOEL  aSB613b.I5 1978  aSingh, R. S.  aPlant Diseases /bby R. S. Singh  a4th ed.  aNew Delhi :bOxford &IBH Publishing Co,cc1978.  axvi,564 p. :bill.  aincludes bibliography and index  aPlant Diseases