Stwens,Neil E
Disease in plants : an introduction to agricultural phytopathology - New Delhi International books &periodicals supply service 1984 - 219
bacteria
Virus
632 .3 / STE/DI
Disease in plants : an introduction to agricultural phytopathology - New Delhi International books &periodicals supply service 1984 - 219
bacteria
Virus
632 .3 / STE/DI