| 000 | 00560 am a2200121 a 4500 | ||
|---|---|---|---|
| 100 | 1 | _aVerwoerd, Len | |
| 245 | 1 |
_aReview of the black stem rust (Puccinia graminis pers.) situation _bWith special reference to the experimetal method applied to rust research in the United States America and Canada, and the nature of the problem in South Africa |
|
| 260 |
_aPretoria _c1935 |
||
| 300 | _a1-63 p. | ||
| 942 |
_2udc _cB |
||
| 440 | _aResearch, Experiment, Rust, Reference Union of South Africa Department of Agriculture. Science Bulletin No. 138 | ||
| 901 | _aS52431 | ||
| 999 |
_c110123 _d110123 |
||