000 00322nam a2200133Ia 4500
008 160316s1969 xxu||||| |||| 00| 0 eng d
020 _a
100 _aJohn Charles Walker
245 _aPlant Pathology
250 _a3RD
260 _aNEW YORK.SAN FRANCISCO
_bMcGRAW-HILL BOOK COMPNY
_c1969
300 _a819
700 _a
_a
999 _c37313
_d37313