| 000 | 00437 am a2200121 a 4500 | ||
|---|---|---|---|
| 100 | 1 | _aJames, D.W., Dow, A.I. | |
| 245 | 1 |
_aSource and degree of soil variation in the field _bThe problem of samlping for soil tests estimating soil fertility status |
|
| 260 |
_aWashington _c1972 |
||
| 300 | _a1-11 p. | ||
| 942 |
_2udc _cB |
||
| 440 | _aSoil, Field, Fertility Washington Agricultural Experiment Station. Bulletin No. 749 | ||
| 901 | _aS20901 | ||
| 999 |
_c107516 _d107516 |
||