000 00312 a2200133 4500
080 _a632
_bW 181 P
245 1 _aPlant pathology
_cby John Charles Walker
250 _a2nd edn.
260 _aNew York
_c1957
650 _aPlant Pathology
100 1 _aWalker, John Charles
_d
300 _a707 p.
901 _a60784
999 _c45859
_d45859