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|a 0393091678
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|a (Sirsi) i9780393064100
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|a (Sirsi) a54901
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|a S589.7
|b E23
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|a 336.16
|b E19
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| 100 |
1 |
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|a Eckholm, Erik P.
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| 245 |
1 |
0 |
|a Losing ground
|b : environmental stress and worldfood prospects
|c / Erik P. Eckholm.
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| 260 |
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|a New York : W.W. Norton & Company,
|c 1976.
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| 300 |
|
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|a 223 p.
|c ; 23 cm.
|
| 504 |
|
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|a Incluye bibliografías.
|
| 650 |
|
7 |
|a Erosión de suelos
|9 354557
|
| 650 |
|
4 |
|a Ecología agrícola.
|9 3136
|
| 650 |
|
4 |
|a Abastecimiento de alimentos.
|
| 596 |
|
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|a 14
|
| 942 |
|
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|c LIBRO
|
| 999 |
|
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|c 28034
|d 28034
|
