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| 001 | Para_5326 | ||
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| 008 | 220125s1921 xx 000 0 und d | ||
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| 090 | _aPA FOLLETO 2667 | ||
| 100 |
_aWalton, W. R. _9121000 |
||
| 245 |
_aThe green-bug or spring grain-aphis : _b how to prevent its periodical outbreaks / _c W. R. Walton |
||
| 260 |
_aWashington : _b Department of Agriculture |
||
| 300 | _a11 p. | ||
| 440 |
_aEUA. Dep. of Agri. Farmers' Bull.; 1217 _9169793 |
||
| 650 |
_aCoccus viridis Toxoptera graminum Cereales _x Plagas _9169794 |
||
| 901 | _aPA FOLLETO 2667 | ||
| 902 | _aA | ||
| 905 | _a0000001921 WAS 0000000000 00 | ||
| 910 | _a1921 | ||
| 942 | _cPARA | ||
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_cPARA _d1 |
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_c203855 _d203855 |
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