00291nam a2200109 a 450000500170000000800410001704100080005810000180006624500350008426400510011930000110017020260717080007.0260701s1978    ii            000 0 eng d  aeng1 aMathur, R. S.10aPlant Diseases /cMathur, R.S. 1aNew Delhi :bNational Book Trust India,c1978.  a255 p.