000 00313 am a2200121 a 4500
100 1 _aDoidge, E.M.
245 1 _aFurther citrus canker studies
260 _aPretoria
_c1929
300 _a1-31 p.
942 _2udc
_cB
440 _aUnion of South Africa Department of Agricultre. Bulletin No. 51
901 _aS53173
999 _c111068
_d111068