000 | 00301 am a2200121 a 4500 | ||
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100 | 1 |
_a _d |
|
245 | 1 | _aHow to control a gully | |
260 |
_aWashington _c1961 |
||
300 | _a1-14 p. | ||
942 |
_2udc _cB |
||
440 | _aUnited States Department of Agriculture. Farmers' Bulletin No. 2171 | ||
901 | _aS8939 | ||
999 |
_c104695 _d104695 |