| 000 | 00421 am a2200133 a 4500 | ||
|---|---|---|---|
| 080 | _a631.62:626.862.1:519.2 | ||
| 100 | 1 | _aGrover, B.L., Kirkham, Don | |
| 245 | 1 | _aSolving tile drainage problems by using model data | |
| 260 |
_aAmes _c1964 |
||
| 300 | _a1-48 p. | ||
| 942 |
_2udc _cB |
||
| 440 | _aDrainage, Problems Iowa Agricultural and Home Economics Experiment Station. Research Bulletin No. 523 | ||
| 901 | _aS13415 | ||
| 999 |
_c103165 _d103165 |
||