| 000 | 00387nam a2200133Ia 4500 | ||
|---|---|---|---|
| 008 | 130225s9999 xx 000 0 und d | ||
| 100 | _aSmith, Richard M., Abruna, Fernando | ||
| 245 | _aSoil and water conservation research in Puerto Rico, 1938 to 1947 | ||
| 260 |
_aRio Piedras _c1955 |
||
| 300 | _a51 p. | ||
| 440 | _aNo. 124; Puerto Rico Agricult | ||
| 901 | _a47663 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c8645 _d8645 |
||